摘要
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。
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.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
1991年第1期54-57,共4页
Journal of Nuclear and Radiochemistry
关键词
^237NP
裂变
产额
中子诱发
(237)~Np, Neutron, Fission yield, γ-ray spectrometry.
