期刊
NUCLEAR PHYSICS A
卷 906, 期 -, 页码 1-13出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysa.2013.03.002
关键词
Heavy and superheavy nuclei; Half-lives; Spontaneous fission
资金
- Natural Science Foundation of China [10775061, 11120101005, 11105035, 10975064, 11175074]
- Fundamental Research Funds for the Central Universities [lzujbky-2012-5]
- CAS Knowledge Innovation Project [KJCX-SYW-N02]
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.
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