Influence of Neutron Shell Closure (Nc = 126) on Prescission Particle Emission of Fissioning Systems 216,224 Th
YE Wei
Department of Physics, Southeast of University, Nanjing 210096
Influence of Neutron Shell Closure (Nc = 126) on Prescission Particle Emission of Fissioning Systems 216,224 Th
YE Wei
Department of Physics, Southeast of University, Nanjing 210096
关键词 ：
25.70.Jj ,
25.85.Ge
Abstract ： The effect of neutron shell closure Nc = 126 on the prescission particle emission of 126 Th and 224 Th nuclei is investigated within the framework of an extensive Smoluchowski equation. It is found that there is a large difference in the prescission neutron multiplicity for the two Th nuclei, indicating a strong shell effect in neutron emission. Moreover, shell effects on particle emission are also investigated as functions of excitation energy, angular momentum and nuclear viscosity. The results show that with increasing excitation energy shell effects in prefission neutron evolve from continual strongness to gradual weakness. Both high angular momenta and low viscosity weaken the shell effects on the particle emission.
Key words ：
25.70.Jj
25.85.Ge
出版日期: 2003-04-01
:
25.70.Jj
(Fusion and fusion-fission reactions)
25.85.Ge
(Charged-particle-induced fission)
引用本文:
YE Wei. Influence of Neutron Shell Closure (Nc = 126) on Prescission Particle Emission of Fissioning Systems 216,224 Th[J]. 中国物理快报, 2003, 20(4): 482-485.
c = 126) on Prescission Particle Emission of Fissioning Systems 216,224 Th. Chin. Phys. Lett., 2003, 20(4): 482-485.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I4/482
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