| Investigation on the deformation of Ne and Mg isotope chains within relativistic mean-field model |
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| 作者姓名： | 陈金根 蔡翔舟 王庭太 马余刚 任中洲 方德清 钟晨 魏义彬 郭威 周星飞 王鲲 马国亮 田文栋 陈金辉 颜廷志 左嘉旭 马春旺 沈文庆 |
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| 作者单位： | Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;College of
Science, Zhejiang Forestry University, Hangzhou 311300, China ;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Department of Mathematics and Physics,Zhongyuan Institute of Technology,450007, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Department of Physics, Nanjing University, Nanjing 210008, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;College of Sciences, Ningbo University, Ningbo 315211, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;Graduate School of the Chinese Academy of Sciences, Beijing 100039, China;Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China |
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| 基金项目： | Project supported by the Major State Basic Research Development Program of China (Grant No G2000077404), the National Natural Science Foundation of China (Grant Nos 10125521, 10475108, 10405032 and 10328259), the Fund of the Education Ministry of China (Grant No 20010284036) and the Shanghai Phosphor Program (Grant No 03 QA 14066). |
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| 摘 要： | Ne and Mg isotope chains are investigated based on constrained calculations in the framework of a deformed relativistic mean-field （RMF） model with the NL075 parameter set. The calculated quadrupole deformation and binding energy are compared with other theoretical results as well as the available experimental data. It shows that the calculated deformations of Ne and Mg with the NL075 are more accurate than those obtained with the NL-SH. It is predicted that ^19,29,32Ne and ^20,31Mg maybe have a triaxial deformation and ^25-28Ne and ^27-30Mg exhibit a shape coexistence probably. The closure effect of neutron number N=8 for ^20Mg is predicted to be very weak.
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| 关 键 词： | 氖 镁 同位素链 RMF模型 约束计算 原子核物理学 |
| 收稿时间： | 2005-01-26 |
| 修稿时间： | 2005-01-262005-06-20 |
Investigation on the deformation of Ne and Mg isotope chains within relativistic mean-field model |
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| Chen Jin-Gen,Cai Xiang-Zhou,Wang Ting-Tai,Ma Yu-Gang,Ren Zhong-Zhou,Fang De-Qing,Zhong Chen,Wei Yi-Bin,Guo Wei,Zhou Xing-Fei,Wang Kun,Ma Guo-Liang,Tian Wen-Dong,Chen Jin-Hui,Yan Ting-Zhi,Zuo Jia-Xu,Ma Chun-Wang and Shen Wen-Qing.Investigation on the deformation of Ne and Mg isotope chains within relativistic mean-field model[J].Chinese Physics B,2005,14(12):2444-2450. |
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| Authors: | Chen Jin-Gen Cai Xiang-Zhou Wang Ting-Tai Ma Yu-Gang Ren Zhong-Zhou Fang De-Qing Zhong Chen Wei Yi-Bin Guo Wei Zhou Xing-Fei Wang Kun Ma Guo-Liang Tian Wen-Dong Chen Jin-Hui Yan Ting-Zhi Zuo Jia-Xu Ma Chun-Wang and Shen Wen-Qing |
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| Abstract: | Ne and Mg isotope chains are investigated based on constrained calculations in the framework of a deformed relativistic mean-field (RMF) model with the NL075 parameter set. The calculated quadrupole deformation and binding energy are compared with other theoretical results as well as the available
experimental data. It shows that the calculated deformations of Ne and Mg with the NL075 are more accurate than those obtained with the NL-SH. It is predicted that ^{19,29,32}Ne and ^{20,31}Mg maybe
have a triaxial deformation and ^{25-28}Ne and ^{27-30}Mg exhibit a shape coexistence probably. The closure effect of neutron number N=8 for ^{20}Mg is predicted to be very weak. |
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| Keywords: | deformation shape coexistence binding energy RMF model constraint calculation |
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