Spontaneous fission half-lives of heavy and superheavy nuclei within a generalized liquid drop model

被引:47
作者
Bao, Xiaojun [1 ]
Zhang, Hongfei [1 ]
Royer, G. [2 ]
Li, Junqing [1 ,3 ]
机构
[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
[2] Univ Nantes, Ecole Mines, CNRS, Lab Subatech,UMR,IN2P3, Nantes, France
[3] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
关键词
Heavy and superheavy nuclei; Half-lives; Spontaneous fission; QUASI-MOLECULAR SHAPES; GROUND-STATE; ASYMMETRIC FISSION; BARRIERS; FUSION; DEFORMATIONS; STABILITY; ENERGIES; EMISSION; ELEMENTS;
D O I
10.1016/j.nuclphysa.2013.03.002
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
We systematically calculate the spontaneous fission half-lives for heavy and superheavy nuclei between U and Fl isotopes. The spontaneous fission process is studied within the semi-empirical WKB approximation. The potential barrier is obtained using a generalized liquid drop model, taking into account the nuclear proximity, the mass asymmetry, the phenomenological pairing correction, and the microscopic shell correction. Macroscopic inertial-mass function has been employed for the calculation of the fission half-life. The results reproduce rather well the experimental data. Relatively long half-lives are predicted for many unknown nuclei, sufficient to detect them if synthesized in a laboratory. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 13
页数:13
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