INTERMEDIATE STATES IN FISSION

被引：143
作者：
BJORNHOL.S
STRUTINS.VM
机构：
[1] The Niels Bohr Institute, University of Copenhagen
来源：
NUCLEAR PHYSICS A | 1969年 / A136卷 / 01期
关键词：
D O I：
10.1016/0375-9474(69)90035-9
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Shell effects give rise to modulations in the liquid-drop fission barriers. For heavy nuclei with neutron number in the vicinity of 146-148, a two-humped barrier results, and the states of the secondary minimum act as intermediate states in the fission process. The existence of such states is reflected in subbarrier fission induced by neutrons in the resonance region, in the occurrence of broad resonance structures in the fission excitation functions, in anomalous fragment angular distributions and in the observed fission isomerism. Theoretical consequences of a two-humped fission barrier are developed and compared with experiment. © 1969.
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