Keyword:GROUP

GROUP igamgp {0}

---

This keyword specifies the binning of the discrete photon spectral lines into histograms for use in the γ-dose computations and PRINTLIB output. The same bins are used for the approximate γ spectra generated when the SPEK keyword is used in the condense phase of the library data processing

The default (igamgp = 0) case produces the γ-spectrum data in a 24-energy group structure.

The igamgp = 1 option outputs the γ-spectrum data in the 22-group 'Steiner' structure.

Note that the structure determined by igamgp is also used when TAB4 is specified to produce a file of the γ-spectrum data.

An example where the 22-group Steiner structure is requested for the gamma spectrum:

< -- Control phase -- >
...
FISPACT
* Title of the simulation
< -- Initial phase -- > 
...
GROUP 1
...
< -- Inventory phase -- > 
...