Bimodal fission in binary and ternary spontaneous fission of 252Cf

被引：0

作者：

D. Fong

J. H. Hamilton

A. V. Ramayya

J. K. Hwang

C. Goodin

K. Li

J. Kormicki

J. O. Rasmussen

Y. X. Luo

S. C. Wu

I. Y. Lee

A. V. Daniel

G. M. Ter-Akopian

G. S. Popeko

A. S. Fomichev

A. M. Rodin

Yu. Ts. Oganessian

M. Jandel

J. Kliman

L. Krupa

J. D. Cole

M. A. Stoyer

R. Donangelo

W. C. Ma

机构：

[1] Vanderbilt University,Department of Physics

[2] Lawrence Berkeley National Laboratory,Flerov Laboratory of Nuclear Reactions

[3] Joint Institute for Nuclear Research,Department of Nuclear Physics

[4] Slovak Academy of Sciences,Instituto de Fiscia

[5] Idaho National Engineering and Environmental Laboratory,Department of Physics

[6] Lawrence Livermore National Laboratory,undefined

[7] Universidade Federal do Rio de Janeiro,undefined

[8] Mississippi State University,undefined

来源：

Physics of Atomic Nuclei | 2006年 / 69卷

关键词：

25.85.Ca; 21.10.Gv;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The hot bimodal fission of 252Cf is reexamined with new high-statistics data. We constructed a γ-γ-γ coincidence cube for binary fission and LCP-gated γ-γ matrix for ternary fission. By identifying the secondary fission fragments from their γ-ray transitions, we measured the yields for various fission splits. The normal neutron yield distribution is found to be Gaussian for Xe-Ru. However, the binary fission split of Ba-Mo is found to exhibit a bimodal neutron distribution with the “hot mode” corresponding to ≈3.1% of the total yield. In α ternary fission, the first measurements of yields for specific fission splits are presented. The Te-α-Ru and Xe-α-Mo neutron yields fit well with a single mode, but the Ba-α-Zr split shows evidence for an enhanced hot mode with an intensity of ≈13.8% of the normal mode.

引用

页码：1161 / 1167

页数：6

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