Exponent dependency of neutron multiplication factor distribution in system randomized with $1/f^{beta}$ frequency spectrum

Araki, Shohei ; Yamane, Yuichi ; Ueki, Taro ; Tonoike, Kotaro

We investigated the effect of the degree of randomness on the distribution of neutron multiplication factors ( $k_{eff}$ ) calculated for fuel debris for the purpose of criticality risk assessment. The calculation results with the model randomized with $1/f^{beta}$ frequency spectrum showed a positive correlation between the exponent and variance of the ( $k_{eff}$ ) distribution.

Language	:	Japanese
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Meeting title	:	日本原子力学会2018年秋の大会
Held date	:	2018/09
Location (city)	:	岡山
Location (country)	:	日本
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Keywords	:	燃料デブリ; 中性子実効増倍率; モンテカルロ計算; 乱雑さ; 臨界安全
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Registration No. : BB20180372
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Exponent dependency of neutron multiplication factor distribution in system randomized with frequency spectrum

Exponent dependency of neutron multiplication factor distribution in system randomized with $1/f^{beta}$ frequency spectrum