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Next: Output description Up: Syntax for cross section Previous: File names   Contents   Index

Order of cross section data

The program assumes the following order of the cross section data in the ASCII files

.
The first line of the non-fuel files and the two first lines of the fuel files contain informative text and are discarded.

.
The Gth order group diffusion vector (= diagonal matrix) $[\overline{D}{}^1 , \overline{D}{}^2 , \ldots , \overline{D}{}^G]$ [cm].

.
A (G x G) order matrix written row-wise which holds the removal matrix (see Eq. (1.89)) , $\overline{\hspace{0.2ex}\underline{\underline{\Sigma}}{}\hspace{0.15ex}}{}_r$, with off-diagonal elements negated (this corresponds to the syntax of the output used by the RISØ program cccmo (see section 1.4) $[\mbox{cm}^{-1}]$.

.
A Gth order fission spectrum vector (= diagonal matrix) $[\chi^1, \chi^2, \ldots , \chi^G]$ (see Eq. (1.83)) [--].

.
A Gth order vector (= diagonal matrix) which holds the values $\overline{\nu \Sigma_f^g}{}$ (see Eq. (1.85)) $[\mbox{cm}^{-1}]$.

.
A Gth order vector which specifies the group fission cross sections, $\overline{\Sigma}{}_f^g$ $[\mbox{cm}^{-1}]$.

For non-fuel cross sections only the three first items are of importance.

 
 

 
 
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