Multi-layered parallel plate ionization chamber for cross-section measurements of minor actinides

マイナーアクチノイドの核分裂断面積測定のための並行平板型イオン検出器

廣瀬 健太郎*; 大槻 勤*; 柴崎 義信*; 岩佐 直仁*; 堀 順一*; 高宮 幸一*; 八島 浩*; 西尾 勝久   ; 鬼柳 善明*

Hirose, Kentaro*; Otsuki, Tsutomu*; Shibasaki, Yoshinobu*; Iwasa, Naohito*; Hori, Junichi*; Takamiya, Koichi*; Yashima, Hiroshi*; Nishio, Katsuhisa; Kiyanagi, Yoshiaki*

A multi-layer parallel plate avalanche chamber (PPIC) has been developed for the measurement of neuron-induced fission cross-section using the lead slowing down neutron spectrometer at the Research Reactor Institute, Kyoto University. The PPIC consists of two sets of multi-layer electrodes to detect fission fragments from two samples located back-to-back between them. The performance of the PPIC was tested with a spontaneous fission of Cm. The cross section for the neutron-induced fission of Am was successfully obtained using that of U as a reference.