.. _sec-data.mt:

MT Reaction Types on SCALE Cross-Section Libraries
--------------------------------------------------

.. |213| replace:: :math:`\kappa^+`
.. |214| replace:: :math:`\kappa^0_{long}`
.. |215| replace:: :math:`\kappa^0_{short}`
.. |216| replace:: :math:`\kappa^-`
.. |251| replace:: :math:`\bar{\mu}_{L}`
.. |301| replace:: :math:`E * \sigma`
.. |452| replace:: :math:`\bar{V}_{T}`
.. |455| replace:: :math:`\bar{V} d`
.. |456| replace:: :math:`\bar{V} p`
.. |750| replace:: :sup`3`\ He\ :sub:`1`
.. |751| replace:: :sup`3`\ He\ :sub:`2`
.. |799| replace:: :sup`3`\ He\ :sub:`c`
.. |1452| replace:: :math:`\bar{V} T`
.. |1456| replace:: :math:`\bar{V}_{p}`
.. |1455| replace:: :math:`\bar{v}_{d}`
.. |alph| replace:: :math:`\alpha`

ENDF reaction types (MT) are identified by an integer number from 1
through 999. :numref:`table-endf-mt` includes a copy of information taken from
Ref. 8. Within SCALE, MT numbers are used to identify reactions on
various input and output arrays.

MT numbers greater than 999 are additional SCALE-specific identifiers
that may appear in SCALE cross-section libraries. These reaction types
are not ENDF reaction types but may be added by various preprocessing
codes in the SCALE and/or AMPX systems.

These reactions are listed in :numref:`table-scale-mt`.

The dose conversion factors and their corresponding MT numbers in the
SCALE shielding cross-section libraries can be found in :numref:`table10-1-14`.


.. tabularcolumns:: |\Y{0.1}|\Y{0.2}|\Y{0.7}|
.. table:: ENDF MT Reaction Types.
  :class: longtable
  :name: table-endf-mt

  +-----------------------+-----------------------+-----------------------+
  | **MT**                | **Reaction**          | **Description**       |
  +-----------------------+-----------------------+-----------------------+
  | 1                     | (n,total)             | Neutron total cross   |
  |                       |                       | sections. Sum of      |
  |                       |                       | MT=2, 4, 5, 11,       |
  |                       |                       | 16-18, 22-26, 28-37,  |
  |                       |                       | 41-42, 44-45,         |
  |                       |                       | 102-117.              |
  +-----------------------+-----------------------+-----------------------+
  | 2                     | (z,z\ :sub:`0`)       | Elastic scattering    |
  |                       |                       | cross section for     |
  |                       |                       | incident particles.   |
  +-----------------------+-----------------------+-----------------------+
  | 3                     | (z,nonelastic)        | Nonelastic neutron    |
  |                       |                       | cross section. Sum of |
  |                       |                       | MT=4, 5, 11, 16-18,   |
  |                       |                       | 22-26, 28-37, 41-42,  |
  |                       |                       | 44-45, 102-117.       |
  +-----------------------+-----------------------+-----------------------+
  | 4                     | (z,n)                 | Production of one     |
  |                       |                       | neutron in the exit   |
  |                       |                       | channel. Sum of the   |
  |                       |                       | MT=50-91.             |
  +-----------------------+-----------------------+-----------------------+
  | 5                     | (z,anything)          | Sum of all reactions  |
  |                       |                       | not given explicitly  |
  |                       |                       | in another MT number. |
  |                       |                       | This is a partial     |
  |                       |                       | reaction to be added  |
  |                       |                       | to obtain MT=1.       |
  +-----------------------+-----------------------+-----------------------+
  | 6-9                   |                       | Not allowed in        |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 10                    | (z,continuum)         | Total continuum       |
  |                       |                       | reaction; includes    |
  |                       |                       | all continuum         |
  |                       |                       | reactions and         |
  |                       |                       | excludes all discrete |
  |                       |                       | reactions.            |
  +-----------------------+-----------------------+-----------------------+
  | 11                    | (z,2nd)               | Production of two     |
  |                       |                       | neutrons and a        |
  |                       |                       | deuteron, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 12-15                 |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 16                    | (z,2n)                | Production of two     |
  |                       |                       | neutrons and a        |
  |                       |                       | residual [XS1]_. Sum  |
  |                       |                       | of MT=875-891, if they|
  |                       |                       | are present.          |
  +-----------------------+-----------------------+-----------------------+
  | 17                    | (z,3n)                |                       |
  +-----------------------+-----------------------+-----------------------+
  | 18                    | (z,fission)           |                       |
  +-----------------------+-----------------------+-----------------------+
  | 19                    | (n,f)                 |                       |
  +-----------------------+-----------------------+-----------------------+
  | 20                    | (n,nf)                | Second-chance         |
  |                       |                       | fission [XS2]_.       |
  +-----------------------+-----------------------+-----------------------+
  | 21                    | (n,2nf)               | Third-chance          |
  |                       |                       | fission\ [XS2]_.      |
  +-----------------------+-----------------------+-----------------------+
  | 22                    | (z,n\ |alph|)         | Production of a       |
  |                       |                       | neutron and an alpha  |
  |                       |                       | particle, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 23                    | (n,n3\ |alph|         | Production of a       |
  |                       |                       | neutron and three     |
  |                       |                       | alpha particles, plus |
  |                       |                       | a residual.           |
  +-----------------------+-----------------------+-----------------------+
  | 24                    | (z,2n\ |alph|)        | Production of two     |
  |                       |                       | neutrons and an alpha |
  |                       |                       | particle, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 25                    | (z,3n\ |alph|)        | Production of three   |
  |                       |                       | neutrons and an alpha |
  |                       |                       | particle, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 26                    |                       | Not allowed in        |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 27                    | (n,abs)               | Absorption; sum of    |
  |                       |                       | MT=18 and MT=102      |
  |                       |                       | through MT=117.       |
  +-----------------------+-----------------------+-----------------------+
  | 28                    | (z,np)                | Production of a       |
  |                       |                       | neutron and a proton, |
  |                       |                       | plus a residual.      |
  +-----------------------+-----------------------+-----------------------+
  | 29                    | (z,n2\ |alph|)        | Production of a       |
  |                       |                       | neutron and two alpha |
  |                       |                       | particles, plus a     |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 30                    | (z,2n2\ |alph|)       | Production of two     |
  |                       |                       | neutrons and two      |
  |                       |                       | alpha particles, plus |
  |                       |                       | a residual.           |
  +-----------------------+-----------------------+-----------------------+
  | 31                    |                       | Not allowed for       |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 32                    | (z,nd)                | Production of a       |
  |                       |                       | neutron and a         |
  |                       |                       | deuteron, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 33                    | (z,nt)                | Production of a       |
  |                       |                       | neutron and a triton, |
  |                       |                       | plus a residual.      |
  +-----------------------+-----------------------+-----------------------+
  | 34                    | (z,n\ :sup:`3`\ He)   | Production of a       |
  |                       |                       | neutron and a         |
  |                       |                       | :sup:`3`\ He          |
  |                       |                       | particle, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 35                    | (z,nd2\ |alph|)       | Production of a       |
  |                       |                       | neutron, a deuteron,  |
  |                       |                       | and 2 alpha           |
  |                       |                       | particles, plus a     |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 36                    | (z,nt2\ |alph|)       | Production of a       |
  |                       |                       | neutron, a triton,    |
  |                       |                       | and 2 alpha           |
  |                       |                       | particles, plus a     |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 37                    | (z,4n)                | Production of 4       |
  |                       |                       | neutrons, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 38                    | (n,3nf)               | Fourth-chance fission |
  |                       |                       | cross                 |
  |                       |                       | section\ :sup:`2`.    |
  +-----------------------+-----------------------+-----------------------+
  | 39                    |                       | Not allowed for       |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 40                    |                       | Not allowed for       |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 41                    | (z,2np)               | Production of 2       |
  |                       |                       | neutrons and a        |
  |                       |                       | proton, plus a        |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 42                    | (z,3np)               | Production of 3       |
  |                       |                       | neutrons and a        |
  |                       |                       | proton, plus a        |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 43                    |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 44                    | (z,n2p)               | Production of a       |
  |                       |                       | neutron and 2         |
  |                       |                       | protons, plus a       |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 45                    | (z,np\ |alph|)        | Production of a       |
  |                       |                       | neutron, a proton,    |
  |                       |                       | and an alpha          |
  |                       |                       | particle, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 46-49                 |                       | Not allowed in        |
  |                       |                       | Version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 50                    | (y,n\ :sub:`0`)       | Production of a       |
  |                       |                       | neutron, leaving the  |
  |                       |                       | residual nucleus in   |
  |                       |                       | the ground state.     |
  +-----------------------+-----------------------+-----------------------+
  | 51                    | (z,n\ :sub:`1`)       | Production of a       |
  |                       |                       | neutron, with         |
  |                       |                       | residual in the 1st   |
  |                       |                       | excited state.        |
  +-----------------------+-----------------------+-----------------------+
  | 52                    | (z,n\ :sub:`2`)       | Production of a       |
  |                       |                       | neutron, with         |
  |                       |                       | residual in the 2nd   |
  |                       |                       | excited state.        |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  | 90                    | (z,n\ :sub:`40`)      | Production of a       |
  |                       |                       | neutron, with         |
  |                       |                       | residual in the 40th  |
  |                       |                       | excited state.        |
  +-----------------------+-----------------------+-----------------------+
  | 91                    | (z,n\ :sub:`c`)       | Production of a       |
  |                       |                       | neutron in the        |
  |                       |                       | continuum not         |
  |                       |                       | included in the above |
  |                       |                       | discrete              |
  |                       |                       | representation.       |
  +-----------------------+-----------------------+-----------------------+
  | 92-100                |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 101                   | (n,disap)             | Neutron               |
  |                       |                       | disappearance; equal  |
  |                       |                       | to sum of MT=102-117. |
  +-----------------------+-----------------------+-----------------------+
  | 102                   | (z,:math:`\gamma`)    | Radiative capture.    |
  +-----------------------+-----------------------+-----------------------+
  | 103                   | (z,p)                 | Production of a       |
  |                       |                       | proton, plus a        |
  |                       |                       | residual. Sum of      |
  |                       |                       | MT=600-649, if they   |
  |                       |                       | are present.          |
  +-----------------------+-----------------------+-----------------------+
  | 104                   | (z,d)                 | Production of a       |
  |                       |                       | deuteron, plus a      |
  |                       |                       | residual. Sum of      |
  |                       |                       | MT=650-699, if they   |
  |                       |                       | are present.          |
  +-----------------------+-----------------------+-----------------------+
  | 105                   | (z,t)                 | Production of a       |
  |                       |                       | triton, plus a        |
  |                       |                       | residual. Sum of      |
  |                       |                       | MT=700-749, if they   |
  |                       |                       | are present.          |
  +-----------------------+-----------------------+-----------------------+
  | 106                   | (z,\ :sup:`3`\ He)    | Production of a       |
  |                       |                       | :sup:`3`\ He particle |
  |                       |                       | plus a residual. Sum  |
  |                       |                       | of MT=750-799, if     |
  |                       |                       | they are present.     |
  +-----------------------+-----------------------+-----------------------+
  | 107                   | (z,\ |alph|)          | Production of an      |
  |                       |                       | alpha particle, plus  |
  |                       |                       | a residual. Sum of    |
  |                       |                       | MT=800-849, if they   |
  |                       |                       | are present.          |
  +-----------------------+-----------------------+-----------------------+
  | 108                   | (z,2\ |alph|)         | Production of 2 alpha |
  |                       |                       | particles, plus a     |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 109                   | (z,3\ |alph|)         | Production of 3 alpha |
  |                       |                       | particles, plus a     |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 110                   |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 111                   | (z,2p)                | Production of 2       |
  |                       |                       | protons, plus a       |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 112                   | (z,p\ |alph|)         | Production a proton   |
  |                       |                       | and an alpha          |
  |                       |                       | particle, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 113                   | (z,t2\ |alph|)        | Production of a       |
  |                       |                       | triton and 2 alpha    |
  |                       |                       | particles, plus a     |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 114                   | (z,d2\ |alph|)        | Production of a       |
  |                       |                       | deuteron and 2 alpha  |
  |                       |                       | particles, plus a     |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 115                   | (z,pd)                | Production of proton  |
  |                       |                       | and a deuteron, plus  |
  |                       |                       | a residual.           |
  +-----------------------+-----------------------+-----------------------+
  | 116                   | (z,pt)                | Production of proton  |
  |                       |                       | and a triton, plus a  |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 117                   | (z,d\ |alph|)         | Production of         |
  |                       |                       | deuteron and an alpha |
  |                       |                       | particle, plus a      |
  |                       |                       | residual.             |
  +-----------------------+-----------------------+-----------------------+
  | 118-119               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 120                   |                       | Not allowed for       |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 121-150               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 151                   | (n,RES)               | Resonance parameters  |
  |                       |                       | that can be used to   |
  |                       |                       | calculate cross       |
  |                       |                       | sections at different |
  |                       |                       | temperatures in the   |
  |                       |                       | resolved and          |
  |                       |                       | unresolved energy     |
  |                       |                       | regions.              |
  +-----------------------+-----------------------+-----------------------+
  | 152-200               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 201                   | (z,Xn)                | Total neutron         |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 202                   | (z,X :math:`\gamma`)  | Total gamma           |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 203                   | (z,Xp)                | Total proton          |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 204                   | (z,Xd)                | Total deuteron        |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 205                   | (z,Xt)                | Total triton          |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 206                   | (z,X  :sup:`3`\ He)   | Total :sup:`3`\ He    |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 207                   | (z,X\ |alph|)         | Total alpha particle  |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 208                   | (z,X :math:`\pi^+`)   | Total :math:`\pi^+`   |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 209                   | (z,X :math:`\pi^0`)   | Total :math:`pi^0`    |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 210                   | (z,X :math:`\pi^-`)   | Total :math:`\pi^-`   |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 211                   | (z,X :math:\mu^+`)    | Total :math:`\mu^+`   |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 212                   | (z,X :math:`\mu^-`)   | Total :math:`\mu^-`   |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 213                   | (z,X\ |213|)          | Total |213|           |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 214                   | (z,X\ |214|)          | Total |214|           |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 215                   | (z,X\ |215|)          | Total |215|           |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 216                   | (z,X\ |216|)          | Total |216|           |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 217                   | (z,Xp)                | Total anti-proton     |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 218                   | (z,Xn)                | Total anti-neutron    |
  |                       |                       | production.           |
  +-----------------------+-----------------------+-----------------------+
  | 219-250               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 251                   | (n,...)               | |251|, average cosine |
  |                       |                       | of the scattering     |
  |                       |                       | angle (laboratory     |
  |                       |                       | system) for elastic   |
  |                       |                       | scattering of         |
  |                       |                       | neutrons.             |
  +-----------------------+-----------------------+-----------------------+
  | 252                   | (n,...)               | :math:`\xi`, average  |
  |                       |                       | logarithmic energy    |
  |                       |                       | decrement for elastic |
  |                       |                       | scattering of         |
  |                       |                       | neutrons.             |
  +-----------------------+-----------------------+-----------------------+
  | 253                   | (n,...)               | :math:`\gamma`,       |
  |                       |                       | average of the square |
  |                       |                       | of the logarithmic    |
  |                       |                       | energy decrement      |
  |                       |                       | divided by            |
  |                       |                       | twice the average     |
  |                       |                       | logarithmic energy    |
  |                       |                       | decrement, for        |
  |                       |                       | elastic scattering of |
  |                       |                       | neutrons.             |
  +-----------------------+-----------------------+-----------------------+
  | 254-300               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 301-450               | (z,...)               | Energy release        |
  |                       |                       | parameters,\ |301|,   |
  |                       |                       | for total and partial |
  |                       |                       | cross sections; MT=   |
  |                       |                       | 300 plus the reaction |
  |                       |                       | MT number, *e.g.*,    |
  |                       |                       | MT=302 is the elastic |
  |                       |                       | scattering kerma.     |
  +-----------------------+-----------------------+-----------------------+
  | 451                   | (z,...)               | Heading or title      |
  |                       |                       | information; given in |
  |                       |                       | File 1 only.          |
  +-----------------------+-----------------------+-----------------------+
  | 452                   | (z,...)               | |452|, average total  |
  |                       |                       | (prompt plus delayed) |
  |                       |                       | number of neutrons    |
  |                       |                       | released per fission  |
  |                       |                       | event.                |
  +-----------------------+-----------------------+-----------------------+
  | 453                   |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 454                   | (z,...)               | Independent fission   |
  |                       |                       | product yield data.   |
  +-----------------------+-----------------------+-----------------------+
  | 455                   | (z,...)               | |455|, average number |
  |                       |                       | of delayed neutrons   |
  |                       |                       | released per fission  |
  |                       |                       | event.                |
  +-----------------------+-----------------------+-----------------------+
  | 456                   | (z,...)               | |456|, average number |
  |                       |                       | of prompt neutrons    |
  |                       |                       | released per fission  |
  |                       |                       | event.                |
  +-----------------------+-----------------------+-----------------------+
  | 457                   | (z,...)               | Radioactive decay     |
  |                       |                       | data.                 |
  +-----------------------+-----------------------+-----------------------+
  | 458                   | (n,...)               | Energy release in     |
  |                       |                       | fission for incident  |
  |                       |                       | neutrons.             |
  +-----------------------+-----------------------+-----------------------+
  | 459                   | (z,...)               | Cumulative fission    |
  |                       |                       | product yield data.   |
  +-----------------------+-----------------------+-----------------------+
  | 460-464               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 465-466               |                       | Not allowed in        |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 467-499               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 500                   |                       | Total                 |
  |                       |                       | charged-particle      |
  |                       |                       | stopping power.       |
  +-----------------------+-----------------------+-----------------------+
  | 501                   |                       | Total photon          |
  |                       |                       | interaction.          |
  +-----------------------+-----------------------+-----------------------+
  | 502                   |                       | Photon coherent       |
  |                       |                       | scattering.           |
  +-----------------------+-----------------------+-----------------------+
  | 503                   |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 504                   |                       | Photon incoherent     |
  |                       |                       | scattering.           |
  +-----------------------+-----------------------+-----------------------+
  | 505                   |                       | Imaginary scattering  |
  |                       |                       | factor.               |
  +-----------------------+-----------------------+-----------------------+
  | 506                   |                       | Real scattering       |
  |                       |                       | factor.               |
  +-----------------------+-----------------------+-----------------------+
  | 507-514               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 515                   |                       | Pair production,      |
  |                       |                       | electron field.       |
  +-----------------------+-----------------------+-----------------------+
  | 516                   |                       | Pair production; sum  |
  |                       |                       | of MT=515, 517.       |
  +-----------------------+-----------------------+-----------------------+
  | 517                   |                       | Pair production,      |
  |                       |                       | nuclear field.        |
  +-----------------------+-----------------------+-----------------------+
  | 518                   |                       | Not allowed in        |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 519-521               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 522                   |                       | Photoelectric         |
  |                       |                       | absorption.           |
  +-----------------------+-----------------------+-----------------------+
  | 523                   |                       | Photo-excitation      |
  |                       |                       | cross section.        |
  +-----------------------+-----------------------+-----------------------+
  | 524-525               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 526                   |                       | Electro-atomic        |
  |                       |                       | scattering.           |
  +-----------------------+-----------------------+-----------------------+
  | 527                   |                       | Electro-atomic        |
  |                       |                       | bremsstrahlung.       |
  +-----------------------+-----------------------+-----------------------+
  | 528                   |                       | Electro-atomic        |
  |                       |                       | excitation cross      |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 529-531               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 532                   |                       | Not allowed in        |
  |                       |                       | version 6.            |
  +-----------------------+-----------------------+-----------------------+
  | 533                   |                       | Atomic relaxation     |
  |                       |                       | data.                 |
  +-----------------------+-----------------------+-----------------------+
  | 534                   | K                     | (1s1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 535                   | L1                    | (2s1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 536                   | L2                    | (2p1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 537                   | L3                    | (2p3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 538                   | M1                    | (3s1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 539                   | M2                    | (3p1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 540                   | M3                    | (3p3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 541                   | M4                    | (3d3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 542                   | M5                    | (3d5/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 543                   | N1                    | (4s1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 544                   | N2                    | (4p1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 545                   | N3                    | (4p3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 546                   | N4                    | (4dp3/2) subshell     |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 547                   | N5                    | (4d5/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 548                   | N6                    | (4f5/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 549                   | N7                    | (4f7/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 550                   | O1                    | (5s1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 551                   | O2                    | (5p1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 552                   | O3                    | (5p3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 553                   | O4                    | (5d3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 554                   | O5                    | (5d5/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 555                   | O6                    | (5f5/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 556                   | O7                    | (5f7/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 557                   | O8                    | (5g7/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 558                   | O9                    | (5g9/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 559                   | P1                    | (6s1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 560                   | P2                    | (6p1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 561                   | P3                    | (6p3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 562                   | P4                    | (6d3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 563                   | P5                    | (6d5/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 564                   | P6                    | (6f5/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 565                   | P7                    | (6f7/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 566                   | P8                    | (6g7/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 567                   | P9                    | (6g9/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 568                   | P10                   | (6h9/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 569                   | P11                   | (6h11/2) subshell     |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 570                   | Q1                    | (7s1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 571                   | Q2                    | (7p1/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 572                   | Q3                    | (7p3/2) subshell      |
  |                       |                       | photoelectric or      |
  |                       |                       | electro-atomic cross  |
  |                       |                       | section.              |
  +-----------------------+-----------------------+-----------------------+
  | 573-599               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 600                   | (z,p\ :sub:`0`)       | Production of a       |
  |                       |                       | proton leaving the    |
  |                       |                       | residual nucleus in   |
  |                       |                       | the ground state.     |
  +-----------------------+-----------------------+-----------------------+
  | 601                   | (z,p\ :sub:`1`)       | Production of a       |
  |                       |                       | proton, with residual |
  |                       |                       | in the 1st excited    |
  |                       |                       | state.                |
  +-----------------------+-----------------------+-----------------------+
  | 602                   | (z,p\ :sub:`2`)       | Production of a       |
  |                       |                       | proton, with residual |
  |                       |                       | in the 2nd excited    |
  |                       |                       | state.                |
  +-----------------------+-----------------------+-----------------------+
  | 603                   | (z,p\ :sub:`3`)       | Production of a       |
  |                       |                       | proton, with residual |
  |                       |                       | in the 3rd excited    |
  |                       |                       | state.                |
  +-----------------------+-----------------------+-----------------------+
  | 604                   | (z,p\ :sub:`4`)       | Production of a       |
  |                       |                       | proton, with residual |
  |                       |                       | in the 4th excited    |
  |                       |                       | state.                |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  | 649                   | (z,p\ :sub:`c`)       | Production of a       |
  |                       |                       | proton in the         |
  |                       |                       | continuum not         |
  |                       |                       | included in the above |
  |                       |                       | discrete              |
  |                       |                       | representation.       |
  +-----------------------+-----------------------+-----------------------+
  | 650                   | (z,d\ :sub:`0`)       | Production of a       |
  |                       |                       | deuteron leaving the  |
  |                       |                       | residual nucleus in   |
  |                       |                       | the ground state.     |
  +-----------------------+-----------------------+-----------------------+
  | 651                   | (z,d\ :sub:`1`)       | Production of a       |
  |                       |                       | deuteron, with the    |
  |                       |                       | residual in the 1st   |
  |                       |                       | excited state.        |
  +-----------------------+-----------------------+-----------------------+
  | 652                   | (z,d\ :sub:`2`)       | Production of a       |
  |                       |                       | deuteron, with the    |
  |                       |                       | residual in the 2nd   |
  |                       |                       | excited state.        |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  | 699                   | (z,d\ :sub:`c`)       | Production of a       |
  |                       |                       | deuteron in the       |
  |                       |                       | continuum not         |
  |                       |                       | included in the above |
  |                       |                       | discrete              |
  |                       |                       | representation.       |
  +-----------------------+-----------------------+-----------------------+
  | 700                   | (z,t\ :sub:`0`)       | Production of a       |
  |                       |                       | triton leaving the    |
  |                       |                       | residual nucleus in   |
  |                       |                       | the ground state.     |
  +-----------------------+-----------------------+-----------------------+
  | 701                   | (z,t\ :sub:`1`)       | Production of a       |
  |                       |                       | triton, with residual |
  |                       |                       | in the 1st excited    |
  |                       |                       | state.                |
  +-----------------------+-----------------------+-----------------------+
  | 702                   | (z,t\ :sub:`2`)       | Production of a       |
  |                       |                       | triton, with residual |
  |                       |                       | in the 2nd excited    |
  |                       |                       | state.                |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  | 749                   | (z,t\ :sub:`c`)       | Production of a       |
  |                       |                       | triton in the         |
  |                       |                       | continuum not         |
  |                       |                       | included in the above |
  |                       |                       | discrete              |
  |                       |                       | representation.       |
  +-----------------------+-----------------------+-----------------------+
  | 750                   | (n,\ |750|)           | Production of a       |
  |                       |                       | :sup:`3`\ He particle |
  |                       |                       | leaving the residual  |
  |                       |                       | nucleus in the ground |
  |                       |                       | state.                |
  +-----------------------+-----------------------+-----------------------+
  | 751                   | (n,\ |751|)           | Production of a       |
  |                       |                       | :sup:`3`\ He, with    |
  |                       |                       | residual in the 1st   |
  |                       |                       | excited state.        |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  | 799                   | (n,\ |799|)           | Production of a       |
  |                       |                       | :sup:`3`\ He in the   |
  |                       |                       | continuum not         |
  |                       |                       | included in the above |
  |                       |                       | discrete              |
  |                       |                       | representation.       |
  +-----------------------+-----------------------+-----------------------+
  | 800                   | (z,:math:`\alpha_0`)  | Production of an      |
  |                       |                       | alpha particle        |
  |                       |                       | leaving the residual  |
  |                       |                       | nucleus in the ground |
  |                       |                       | state.                |
  +-----------------------+-----------------------+-----------------------+
  | 801                   | (z,:math:`\alpha_1`)  | Production of an      |
  |                       |                       | alpha particle, with  |
  |                       |                       | residual in the 1st   |
  |                       |                       | excited state.        |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  | 849                   | (z,:math:`\alpha_c`)  | Production of an      |
  |                       |                       | alpha particle in the |
  |                       |                       | continuum not         |
  |                       |                       | included in the above |
  |                       |                       | discrete              |
  |                       |                       | representation.       |
  +-----------------------+-----------------------+-----------------------+
  | 850                   |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 851-870               |                       | Lumped reaction       |
  |                       |                       | covariances.          |
  +-----------------------+-----------------------+-----------------------+
  | 871-874               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+
  | 875                   | (z,2n\ :sub:`0`)      | Production of 2       |
  |                       |                       | neutrons with         |
  |                       |                       | residual in the       |
  |                       |                       | ground state.         |
  +-----------------------+-----------------------+-----------------------+
  | 876                   | (z,2n\ :sub:`1`)      | Production of 2       |
  |                       |                       | neutrons with         |
  |                       |                       | residual in the 1st   |
  |                       |                       | excited state.        |
  +-----------------------+-----------------------+-----------------------+
  |                       | …                     |                       |
  +-----------------------+-----------------------+-----------------------+
  | 891                   | (z,2n\ :sub:`c`)      | Production of 2       |
  |                       |                       | neutrons in the       |
  |                       |                       | continuum not         |
  |                       |                       | included in the above |
  |                       |                       | discrete              |
  |                       |                       | representation.       |
  +-----------------------+-----------------------+-----------------------+
  | 892-999               |                       | (Unassigned)          |
  +-----------------------+-----------------------+-----------------------+


.. tabularcolumns:: |\Y{0.2}|\Y{0.8}|
.. table:: SCALE-Specific MT Reaction Types
  :class: longtable
  :name: table-scale-mt

  +-----------------------------------+-----------------------------------+
  | **SCALE MT**                      | **Description**                   |
  +-----------------------------------+-----------------------------------+
  | 1000                              | Transport cross section based on  |
  |                                   | the outscatter approximation. See |
  |                                   | XSDRNPM chapter, section          |
  |                                   | **Outscatter approximation**      |
  |                                   | **(inconsistent method)**.        |
  +-----------------------------------+-----------------------------------+
  | 1001                              | Transport cross section based on  |
  |                                   | the inscatter approximation. See  |
  |                                   | XSDRNPM chapter, section          |
  |                                   | **Inscatter approximation**       |
  |                                   | **(consistent method)**           |
  +-----------------------------------+-----------------------------------+
  | 1007                              | Thermal scattering matrix         |
  +-----------------------------------+-----------------------------------+
  | 1008                              | Elastic part of thermal           |
  |                                   | scattering matrix                 |
  +-----------------------------------+-----------------------------------+
  | 1018                              | Fission spectrum                  |
  +-----------------------------------+-----------------------------------+
  | 1019                              | First chance fission spectrum     |
  +-----------------------------------+-----------------------------------+
  | 1020                              | Second chance fission spectrum    |
  +-----------------------------------+-----------------------------------+
  | 1021                              | Third chance fission spectrum     |
  +-----------------------------------+-----------------------------------+
  | 1038                              | Fourth chance fission spectrum    |
  +-----------------------------------+-----------------------------------+
  | 1099                              | Group integral of the weight      |
  |                                   | function                          |
  +-----------------------------------+-----------------------------------+
  | 1111                              | Flux moment (P\ :sub:`1`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1112                              | Flux moment (P\ :sub:`2`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1113                              | Flux moment (P\ :sub:`3`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1114                              | Flux moment (P\ :sub:`4`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1115                              | Flux moment (P\ :sub:`5`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1116                              | Flux moment (P\ :sub:`6`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1117                              | Flux moment (P\ :sub:`7`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1118                              | Flux moment (P\ :sub:`8`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1119                              | Flux moment (P\ :sub:`9`)         |
  |                                   | weighted total cross section      |
  +-----------------------------------+-----------------------------------+
  | 1452                              | Product of |1452| times the       |
  |                                   | fission cross section             |
  +-----------------------------------+-----------------------------------+
  | 1456                              | Product of |1456| times the       |
  |                                   | fission cross section             |
  +-----------------------------------+-----------------------------------+
  | 1455                              | Product of |1455| times the       |
  |                                   | fission cross section             |
  +-----------------------------------+-----------------------------------+
  | 1500-1501                         | Same as 1000, 1001 except for     |
  |                                   | gamma-ray cross sections          |
  +-----------------------------------+-----------------------------------+
  | 1527                              | Gamma-ray energy absorption       |
  |                                   | coefficient factors               |
  +-----------------------------------+-----------------------------------+
  | 2006                              | Non-absorption collision          |
  |                                   | probability (CE libraries only)   |
  +-----------------------------------+-----------------------------------+
  | 2016                              | Probability of emitting two       |
  |                                   | neutrons (CE libraries only)      |
  +-----------------------------------+-----------------------------------+
  | 2017                              | Probability of emitting three     |
  |                                   | neutrons (CE libraries only)      |
  +-----------------------------------+-----------------------------------+
  | 2018                              | Fission probability (CE libraries |
  |                                   | only)                             |
  +-----------------------------------+-----------------------------------+
  | 2022                              | Within-group scattering cross     |
  |                                   | section                           |
  +-----------------------------------+-----------------------------------+
  | 2027                              | Absorption probability (CE        |
  |                                   | libraries only)                   |
  +-----------------------------------+-----------------------------------+
  | 4561                              | |1456| for first chance fissions  |
  +-----------------------------------+-----------------------------------+
  | 4562                              | |1456| for second chance fissions |
  +-----------------------------------+-----------------------------------+
  | 4563                              | |1456| for third chance fissions  |
  +-----------------------------------+-----------------------------------+
  | 4564                              | |1456| for fourth chance fissions |
  +-----------------------------------+-----------------------------------+

.. [XS1]
   The "residual" is the remainder after the reaction specified by MT
   has taken place (for example, A-1 after an n,2n reaction on target
   A). This "residual" may break up further if LR>0.

.. [XS2]
   Note that the partial fission cross sections are not defined for
   incident charged particles.