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ECN publicatie:
Titel:
Resonance treatment with the subgroep method in WIMS
 
Auteur(s):
 
Gepubliceerd door: Publicatie datum:
ECN NUCLEAIR 1-10-1998
 
ECN publicatienummer: Publicatie type:
ECN-I--98-061 Overig
 
Aantal pagina's: Volledige tekst:
16  Niet beschikbaar.

Samenvatting:
In a WIMS7 (an extremely flexible package of methods that can be used tomodel any type of thermal reactor) calculation the bulk of the nuclides present are usually treated with the equivalence theory for the spatial and energy shielding. However, some of the important fission and absorption resonance nuclides are treated in more detail by the subgroup method. Both methods produce the group averaged cross sections. This report describes the resonance treatment in WIMS7 by the subgroup method. The method of calculation of the group fluxes by use of the first-flight collision probabilities will also be explained. 8 refs.


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