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19.1MeV中子诱发²³⁵U裂变质量分布研究

MASS DISTRIBUTION IN 19.1 MeV NEUTRON-INDUCED FISSION OF ²³⁵U

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【Author】 BAO Jie 1, LIU Yong hui 1, YNAG Yi 1, FENG Jing 1, LI Ze 2, CUI An zhi 2, SUN Hong Qing 2, ZHANG Sheng dong 2,GUO Jing ru 21 China Institute of Atomic Energy, P.O.Box 275(46),Beijing 102413, China; 2 China Institute of Atomic Energy,

【机构】中国原子能科学研究院核物理研究所；中国原子能科学研究院放射化学研究所；中国原子能科学研究；

【摘要】用双裂变电离室测量了靶物质碎片的裂变率 ,由阈探测器测量了中子能谱 ,用γ能谱法测量了 19 1Mev中子诱发2 3 5U裂变时95Zr,14 7Nd等 35种产物核素的产额。并绘制了产额 -质量分布曲线更多还原

【Abstract】 chain yields are determined for the fission of 235 U induced by 19.1 MeV neutrons by HPGe γ ray spectrometry. Absolute fission rate is monitored with a double fission chamber. The efficiency of the fission chamber is checked with absolute determination of 198 Au activity from 197 Au(n,γ) 198 Au reaction for the first time. Fission product activities of irradiated 235 U foils are measured by HPGe γ ray spectrometry without chemical separation. Threshold detector method is used to estimate the fission events induced by neutrons of other energies.更多还原