The NJOY Nuclear Data Processing System, Volume 1:User's Manual

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778 (n,3Hec) cross section for continuum
779 (n,3He ‘) cross section for continuum specific~lly not included in
OT ($edundant, used for describing outgoing He)
780 (n,aO) cross section for ground state
781 (n,cil)cross section for 1st excited state
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798 (n,ac) cross section for continuum
799 (n,ac’) cross section for continuum specifically not included in
CT (redundant, used to describe outgoing a-particle)
The above MT numbers can also be used as “LR-flags” to indicate the mode of
decay of the residual nucleus. For instance, MT68/LR22 denotes a discrete
(n,n’) scattering event that leaves the residual nucleus in the 18th excited
level; the residual nucleus then decays by a emission. The following MT-numbers
are used ~ as LR-flags:
LR
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Description
31 Indicates that y-emission is the mode of decay of the residual
nucleus formed in the primary reaction.
39 Indicates that internal conversion is the mode of decay of the
residual nucleus formed in the primary reaction.
40 Indicates that electron-positron pair formation is the mode of
decay of the residual nucleus formed in the primary reaction.
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