| Exploring the uncertainties in theoretical predictions of nuclear β-decay half-lives |
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| 引用本文： | 仕敏,方基宇,牛中明.Exploring the uncertainties in theoretical predictions of nuclear β-decay half-lives[J].中国物理C（英文版）,2021(4):273-278. |
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| 作者姓名： | 仕敏 方基宇 牛中明 |
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| 作者单位： | School of Mathematics and Physics;Key Laboratory of Architectural Acoustic Environment of Anhui Higher Education Institutes;Key Laboratory of Advanced Electronic Materials and Devices;School of Physics and Materials Science;Institute of Physical Science and Information Technology |
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| 基金项目： | Partly supported by the National Natural Science Foundation of China under(11805004,11875070);the Key Research Foundation of Education Ministry of Anhui Province(KJ2020A0485);the Open fund for Discipline Construction,Institute of Physical Science and Information Technology,Anhui University. |
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| 摘 要： | Nuclear β-decay half-lives are predicted based on an empirical formula and the mass predictions from various nuclear models.It is found that the empirical formula can reproduce the nuclearβ-decay half-lives well,especially for short-lived nuclei with T1/2<1s.The theoretical half-life uncertainties fromβ-decay energies and the parameters of the empirical formula are further investigated.It is found that the uncertainties of the half-lives are relatively large for heavy nuclei and nuclei near the neutron-drip line.For nuclei on the r-process path,the uncertainties for those with N=126 are about one order of magnitude,which are much larger than the uncertainties for those with N=50 and 82.However,theoretical uncertainties from the parameters of the empirical formula are relatively small for the nuclei on the r-process path,which indicates that the empirical formula is very suitable for predicting theβ-decay half-lives in r-process simulations.
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| 关 键 词： | βdecay nuclear mass r process |
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