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| 超重核292-310122同位素链的α衰变和自发裂变的竞争 | |
| 引用本文： | 包小军,张海飞,李君清,张鸿飞. 超重核292-310122同位素链的α衰变和自发裂变的竞争[J]. 原子核物理评论, 2013, 30(3): 318-323. DOI: 10.11804/NuclPhysRev.30.03.318 |
| 作者姓名： | 包小军 张海飞 李君清 张鸿飞 |
| 作者单位： | 兰州大学核科学与技术学院,甘肃兰州730000; |
| 基金项目： | 国家自然科学基金资助项目(11105035,11175074,11120101005,10975064);中央高校基金基础研究资助项目(lzujbky-2012-5);中国科学院知识创新资助项目(KJCX-SYW-N02)~~ |
| 摘 要： | 基于推广的液滴模型(GLDM) 理论框架，计算了292-310122 同位素链的 衰变和自发裂变的半衰期。计算时的基本输入量为两子核的质量数和电荷数以及反应Q 值。GLDM能很好地描述重核和超重核的 衰变和自发裂变过程。计算结果表明，A < 308 时在同位素链上N = 176~184 的区域α衰变为主要衰变模式。A > 308 时在同位素链上自发裂变为主要衰变模式。308122 是α衰变和自发裂变的分界点，暗示着N = 184 为中子幻数。Based on the framework of the Generalized Liquid Droplet Model (GLDM), alpha decay and spontaneous fission half-lives for 292-310122 isotopes are studied. The calculation of the basic inputs which only need the two fragmentmass numbers, charge numbers and the Q value. GLDM can describe alpha decay and spontaneous fission the nuclei. It is found that the alpha decay is the dominant mode of decay for isotopes with mass number A < 308, and for those with A > 308 spontaneous fission is dominant. The demarcation between alpha decay and spontaneous fission is at 308122, which shows the presence of a spherical neutron shell closure at N = 184. |
| 关 键 词： | 超重核 推广的液滴模型 α衰变 自发裂变 |
| 收稿时间： | 1900-01-01 |
Competition between Decay and Spontaneous Fission in 292-310122 Isotopes |
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| BAO Xiaojun;ZHANG Haifei;LI Junqing;ZHANG Hongfei. Competition between Decay and Spontaneous Fission in 292-310122 Isotopes[J]. Nuclear Physics Review, 2013, 30(3): 318-323. DOI: 10.11804/NuclPhysRev.30.03.318 | |
| Authors: | BAO Xiaojun ZHANG Haifei LI Junqing ZHANG Hongfei |
| Affiliation: | School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China; |
| Abstract: | Based on the framework of the Generalized Liquid Droplet Model (GLDM), alpha decay and spontaneous fission half-lives for 292-310122 isotopes are studied. The calculation of the basic inputs which only need the two fragmentmass numbers, charge numbers and the Q value. GLDM can describe alpha decay and spontaneous fission the nuclei. It is found that the alpha decay is the dominant mode of decay for isotopes with mass number A < 308, and for those with A > 308 spontaneous fission is dominant. The demarcation between alpha decay and spontaneous fission is at 308122, which shows the presence of a spherical neutron shell closure at N = 184. |
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