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JAEA-Data/Code 2007-004 - Welcome to Research Group for ...

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Member KzzmTbft or Kzzmc00t<br />

(( σ s<br />

(g,g’),g’=1,NGT),g=1,NGT)<br />

( σ up (g),g=1,NGT)<br />

( σ c<br />

(g),g=1,NGT)<br />

( σ t<br />

(g),g=1,NGT)<br />

( σ f (g),g=1,NGT)<br />

(ν (g),g=1,NGT)<br />

P 0 scattering matrix<br />

σ if INT(2)>0<br />

s, g→g<br />

'<br />

Note: Some nuclides may not have thermal scattering data.<br />

Up-scattering cross-sections<br />

Capture cross-sections<br />

Total cross-sections<br />

Fission cross-sections<br />

Neutron yields per fission in thermal range<br />

/NGT*(NGT+5) or /5*NGT/<br />

Member mmmmBMIC /MAXNG*6*MMK/<br />

((( σ eff (g,x,i),g=1,MAXNG),x=1,6),i=1,MMK)<br />

where σ eff (g,x,i) is the effective microscopic cross-sections of energy group g,<br />

reaction x, nuclide i.<br />

MAXNG is the maximum number of groups (=107) fixed by the parameter in a<br />

include file of the SRAC sources. If g-value exceeds the number of fine groups,<br />

null values are filled.<br />

The reaction types are σ c by x=1, σ f by x=2, σ e (elastic) by x=3, σ er (elastic<br />

removal) by x=4, σ n,2n by x=5 and νσ f by x=6.<br />

MMK is the number of the whole nuclides contained in the material if IC20=0 (cf.<br />

Sect.2.2) is specified. Otherwise (burn-up calculation), MMK is the number of<br />

whole depleting nuclides implicitly determined by the burn-up chain model even at<br />

the zero burn-up step. As this member has no burn-up tag, the cross-section values<br />

are updated by those at the current burn-up step.<br />

162

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