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Stability of pyrrolidone precipitants against $$gamma$$-ray irradiation

$$gamma$$線照射に対するピロリドン沈殿剤の安定性

野上 雅伸*; 杉山 雄一*; 川崎 武志*; 原田 雅幸*; 川田 善尚*; 森田 泰治  ; 菊池 俊明*; 池田 泰久*

Nogami, Masanobu*; Sugiyama, Yuichi*; Kawasaki, Takeshi*; Harada, Masayuki*; Kawata, Yoshihisa*; Morita, Yasuji; Kikuchi, Toshiaki*; Ikeda, Yasuhisa*

6価及び4価のアクチノイド元素に対して沈殿剤として利用できるN-アルキルピロリドン誘導体について、放射線に対する安定性をCo-60の$$gamma$$線照射により調べた。3M硝酸中での照射試験により、分解速度を評価するとともに、分解のメカニズムを検討した。

Stability of N-alkylated pyrrolidone derivatives (NRPs) against radiation was examined by irradiation tests with Co-60 $$gamma$$-ray. We have been developed a novel reprocessing system using NRPs which have precipitation ability to haxa- and tetravalent actinides in nitric acid media. Degradation rates of NRPs are evaluated by irradiation in 3M nitric acid solutions and mechanism of degradation are discussed in the present paper.

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