14.7MeV中子诱发~(237)Np裂变的质量分布

MASS DISTRIBUTION IN THE 14-7 MeV NEUTRON-INDUCED FISSION OF ~(237)Np

摘要: <正> 目前,从14MeV中子诱发裂变的实验数据中,已对若干锕系核裂变的质量产额作过较为完整的测定。研究过的核素有~(232)Th,~(233-236)U,~(238)U,~(239)Pu,~(240)Pu,~(242)Pu和~(241)Am。但~(237)Np的14MeV中子诱发裂变,迄今尚无比较完整的裂变产物产额数据。1960年Coleman等用放化法测定了从~(91)Sr到~(159)Gd共19个裂变产物的产额。等用质谱法测定了~(237)Np裂变中若干Xe同位素的累积产额,发现精细结构峰在A=134处。本工作用γ能谱法测定了14.7MeV中子诱发~(237)Np裂变的裂变产物产额。
- ~(237)Np /
- 中子 /
- 裂变产额 /
- γ能谱法
Abstract: Yields were determined for 22 fission products from 89Rb to 146Pr in the 14.7 MeV neutron-induced fission of 237Npby γ-ray spectrometry. From these data, the total chain yields for 18 mass numbers were obtained. Ten fission yields are presented for the first time.
- (237)~Np /
- Neutron /
- Fission yield /
- γ-ray spectrometry.

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