| Proton Halo or Skin in the Excited States of Light Nuclei |
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| 作者姓名： | 陈金根 蔡翔舟 张虎勇 沈文庆 任中洲 蒋维洲 马余刚 钟晨 魏义彬 郭威 周星飞 马国亮 王鲲 |
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| 作者单位： | [1]CollegeofSciences,ZhejiangForestryUniversity,Hangzhou311300;ShanghaiInstituteofnuclearResearch,ChineseAcademyofSciences,Shanghai201800(mailingaddress) [2]ShanghaiInstituteofnuclearResearch,ChineseAcademyofSciences,Shanghai201800(mailingaddress) [3]ShanghaiInstituteofnuclearResearch,ChineseAcademyofSciences,Shanghai201800(mailingaddress)；CollegeofSciences,NingboUniversity,Ningbo315211 [4]DepartmentofPhysics,NanjingUniversity,Nanjing210093 |
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| 摘 要： | Properties of nuclei 13,15,N and 9B are investigated in the relativistic mean-field theory with NLz and NL3 force parameters.The calculated binding energies are very close to the experimental ones.The calculations show that the first excited state (1p1/2) in 9B,the first excited state (2s1/2)in 13 N and the second excited state(2s1/2) in 15N are weakly bound .In particular,for 13N and 15N,the proton density distributions in the two above excited states have a long tail and the rms radii of the last proton are greatly larger compared with their respective matter radii.It is predicted that a proton halo exists in the first excited state of 13N and in the second excited state of 15N,respectively.It also indicates that the first excited state in 9B is a proton skin state.
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| 关 键 词： | 质子晕 原子核 相对论 性质 束缚能量 实验研究 计算 激励 密度分布 结构 β稳定线 |
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