Covariance evaluation of self-shielding factor and its temperature gradient for uncertainty evaluation of doppler reactivity

Otsuka, Naohiko; Zukeran, Atsushi*; Takano, Hideki*; Chiba, Go; Ishikawa, Makoto

Covariances of the self-shielding factor and its temperature gradient for the uranium-238 neutron capture reaction have been evaluated from the resonance parameter covariance matrix based on the sensitivity coefficients of the self-shielding factor and its temperature gradient to the resonance parameters. The present result shows that the correlation among resonance parameters yields a substantial contribution to the standard deviations of the self-shielding factor and its temperature gradient.

Language	:	English
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Meeting title	:	2007年度核データ研究会
Held date	:	2007/11
Location (city)	:	東海
Location (country)	:	日本
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Registration No. : BB20072746
JAEA Abstracts No. :
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