Surface and Volume Symmetry Energy Coefficients of a Neutron-Rich Nucleus
文献类型：期刊论文
| 作者 | Ma, CW(马春旺） ; Yang, JB ; Yu, MA ; Pu, J（普洁） ; Wang, SS ; Wei, HL |
| 刊名 | CHINESE PHYSICS LETTERS
 |
| 出版日期 | 2012 |
| 卷号 | 29期号:9 |
| ISSN号 | 0256-307X |
| 英文摘要 | Using an isobaric method, the symmetry-energy coefficient (a(sym)) of a neutron-rich nucleus is obtained from experimental binding energies. The shell effects are shown in a(sym)*/A equivalent to 4a(sym)/A of nuclei. A (sub) magic neutron magic number N = 40 is suggested in a very neutron-rich nucleus, and a(sym)*/A of a nucleus is found to decrease when its mass increases. The a(sym)*/A of a very neutron-rich nucleus with large mass saturates. The volume-symmetry coefficients (b(v)) and surface-symmetry coefficients (b(s)) of a neutron-rich nucleus are extracted from a(sym)*/A by a correlation a(sym)*/A = b(v)/A - b(s)/A (4/3). It is found that b(v) and b(s) decrease when the nucleus becomes more neutron-rich, and tend to saturate in the very neutron-rich nucleus. A linear correlation between b(v) and b(s) is obtained in nuclei with different neutron-excess I, and b(v) of I > 7 nuclei is found to coincide with the results of infinite nuclear matter a(sym) = 32 +/- 4 MeV, and b(s)/b(v) of the nucleus is found to coincide with the results of the finite-range liquid-drop model results. |
| 语种 | 英语 |
| WOS记录号 | WOS:000309112300009 |
| 公开日期 | 2013-12-05 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/13302]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Ma, CW,Yang, JB,Yu, MA,et al. Surface and Volume Symmetry Energy Coefficients of a Neutron-Rich Nucleus[J]. CHINESE PHYSICS LETTERS,2012,29(9). |
| APA | Ma, CW,Yang, JB,Yu, MA,Pu, J,Wang, SS,&Wei, HL.(2012).Surface and Volume Symmetry Energy Coefficients of a Neutron-Rich Nucleus.CHINESE PHYSICS LETTERS,29(9). |
| MLA | Ma, CW,et al."Surface and Volume Symmetry Energy Coefficients of a Neutron-Rich Nucleus".CHINESE PHYSICS LETTERS 29.9(2012). |
入库方式： OAI收割
来源：上海应用物理研究所
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