Keyword:SSFDILUTION

SSFDILUTION nnuc
nucname(j) num(j)
grp(i,j) dilution(i,j), i=1,num(j), j=1,nnuc

---

This keyword adds further user control to that provided by the SSFCHOOSE keyword. If SSFCHOOSE is used with argument nprint set to 1, then the computed dilutions versus energy bin are printed for each nuclide. If the user wishes to override these values, then he may do so using the SSFDILUTION keyword. The first argument nnuc lists the number of nuclides for which dilution values are to be specified. For each nuclide j, the nuclide name nucname(j) and the number of table entries num(j) are given, followed by a list of num(j) pairs of energy group indices grp and dilution cross section values dilution in barns.

In this example the dilution for W182 is set to 100 and 80 barns respectively in energy groups 300 and 301, and the dilution for W184 is set to 2.5 and 10 barns in groups 194 and 200:

Example usage:

< -- Control phase -- >
...
GETXS 1 709
PROBTAB 1 0
SSFCHOOSE 4 0
 W182 W183 W184 W186
SSFFUEL 4
 W182 1.34834187E+22
 W183 7.27597094E+21
 W184 1.55899050E+22
 W186 1.44654079E+22
SSFDILUTION 2
 W182 2
  300 100.0 
  301 80.0
 W184 2
  194 2.5
  200 10.0 
FISPACT
* COLLAPSE tal-n/gxs-709 with tp-709-294
< -- Initial phase -- > 
...
< -- Inventory phase -- > 
...