Uncertainty assessment of neutron resonance transmission analysis using the linear absorption model

中性子共鳴透過法による使用済み燃料の非破壊分析;線形吸収モデルによる評価

北谷 文人  ; 原田 秀郎   ; 高峰 潤 ; 呉田 昌俊   ; 瀬谷 道夫

Kitatani, Fumito; Harada, Hideo; Takamine, Jun; Kureta, Masatoshi; Seya, Michio

Neutron resonance densitometry (NRD) has been proposed to quantify nuclear materials in particle-like debris of melted spent nuclear fuel formed in severe nuclear reactor accidents. NRD proposed here is a hybrid of neutron resonance transmission analysis and neutron resonance capture analysis using a pulsed neutron generator and the neutron time-of-flight technique. In this study, the effects of impurities and sample thickness on the measurement statistical uncertainty were examined using a linear absorption model.