| 镜像核13N-13C 和15N-15O中的激发态晕或皮(英文) |
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| 引用本文： | 陈金根,蔡翔舟,沈文庆,马余刚,任中洲,蒋潍舟,钟晨,魏义彬,郭威,周星飞,马国亮,王鲲.镜像核13N-13C 和15N-15O中的激发态晕或皮(英文)[J].原子核物理评论,2005,22(1):11-16. |
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| 作者姓名： | 陈金根 蔡翔舟 沈文庆 马余刚 任中洲 蒋潍舟 钟晨 魏义彬 郭威 周星飞 马国亮 王鲲 |
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| 作者单位： | 1 浙江林学院理学院, 浙江 杭州, 311300;2 中国科学院上海原子核研究所, 上海 201800;3 南京大学物理系, 江苏 南京 210008;4 宁波大学理学院, 浙江 宁波 315211 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(G2000077404)，国家自然科学基金资助项目 (10125521 )，国家教育部基金资助项目(20010284036)，上海启明星基金资助项目(03QA14066)~~ |
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| 摘 要： | 用非线性相对论平均场对两对镜像核13N-13C 和15N-15O进行了研究. 发现无论在基态还是激发态， 用两套参数所得的结合能都跟实验值很接近. 计算结果显示13N的第一激发态（2s1/2）和第三激发态（1d5/2）各存在一个非束缚的质子晕， 而13C的第三激发态（1d5/2）存在一个弱束缚的中子皮. 另外研究表明, 在另一对镜像核15N-15O的第二激发态（2s1/2）和第一激发态（2s1/2）分别存在一个中子晕和质子皮. Properties of two pairs of mirror nuclei 13N-13C and15N-15O are investigated by using the nonlinear relativistic mean field theory. It is found that all the calculated binding energies with two different parameter sets are very close to the experimental ones for both the ground states and the excited states. The calculations show that the first excited state (2s1/2) and the third excited state (1d5/2) in 13N are both unbound resonances with proton halo structure, whereas the third excited state (1d5/2) in 13C is weakly bound with a neutron skin. It is also predicted that there has a proton halo in the second excited state (2s1/2) of 15N as well as a neutron skin in the first excited state (2s1/2) of 15O.
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| 关 键 词： | 镜像核 激发态 相对论平均场 晕(皮) |
| 收稿时间： | 1900-01-01 |
Halo or Skin in the Excited States of Two Couples of Mirror Nuclei 13N-13C and 15N-15O |
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| CHEN Jin-gen,CAI Xiang-zhou,SHEN Wen-qing,MA Yu-gang,REN Zhong-zhou,JIANG Wei-zhou,ZHONG chen,WEI Yi-bin,GUO Wei,ZHOU Xing-fei,MA Guo-liang,WANG Kun.Halo or Skin in the Excited States of Two Couples of Mirror Nuclei 13N-13C and 15N-15O[J].Nuclear Physics Review,2005,22(1):11-16. |
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| Authors: | CHEN Jin-gen CAI Xiang-zhou SHEN Wen-qing MA Yu-gang REN Zhong-zhou JIANG Wei-zhou ZHONG chen WEI Yi-bin GUO Wei ZHOU Xing-fei MA Guo-liang WANG Kun |
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| Institution: | 1 Zhejiang Forestry University, Hangzhou 311300, China;2 Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800, China; 3 Department of Physics, Nanjing University, Nanjing 210008, China;4 College of Sciences, Ningbo University, Ningbo 315211, China |
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| Abstract: | Properties of two pairs of mirror nuclei ~(13)N-~(13)C and ~(15)N-~(15)O are investigated by using the nonlinear relativistic mean-field theory. It is found that all the calculated binding energies with two different parameter sets are very close to the experimental ones for both the ground states and the excited states. The calculations show that the first excited state (2s_(1/2)) and the third excited state (1d_(5/2)) in ~(13)N are both unbound resonances with proton halo structure, whereas the third excited state (1d_(5/2)) in ~(13)C is weakly bound with a neutron skin. It is also predicted that there has a proton halo in the second excited state (2s_(1/2)) of ~(15)N as well as a neutron skin in the first excited state (2s_(1/2)) of ~(15)O. |
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| Keywords: | mirror nuclei excited state relativistic mean field halo (skin) |
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