Proton Halo or Skin in the Excited States of Light Nuclei
CHEN Jin-Gen1,2, CAI Xiang-Zhou2, ZHANG Hu-Yong2, SHEN Wen-Qing2,4, REN Zhong-Zhou3, JIANG Wei-Zhou2, MA Yu-Gang2, ZHONG Chen2, WEI Yi-Bin2, GUO Wei2, ZHOU Xing-Fei2,4, MA Guo-Liang2, WANG Kun2
1College of Sciences, Zhejiang Forestry University, Hangzhou 311300
2Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800 (mailing address)
3Department of Physics, Nanjing University, Nanjing 210093
4College of Sciences, Ningbo University, Ningbo 315211
Proton Halo or Skin in the Excited States of Light Nuclei
1College of Sciences, Zhejiang Forestry University, Hangzhou 311300
2Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800 (mailing address)
3Department of Physics, Nanjing University, Nanjing 210093
4College of Sciences, Ningbo University, Ningbo 315211
Abstract： Properties of nuclei 13,15N 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 13N 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.
CHEN Jin-Gen;CAI Xiang-Zhou;ZHANG Hu-Yong;SHEN Wen-Qing;REN Zhong-Zhou;JIANG Wei-Zhou;MA Yu-Gang;ZHONG Chen;WEI Yi-Bin;GUO Wei;ZHOU Xing-Fei;MA Guo-Liang;WANG Kun. Proton Halo or Skin in the Excited States of Light Nuclei[J]. 中国物理快报, 2003, 20(7): 1021-1024.
CHEN Jin-Gen, CAI Xiang-Zhou, ZHANG Hu-Yong, SHEN Wen-Qing, REN Zhong-Zhou, JIANG Wei-Zhou, MA Yu-Gang, ZHONG Chen, WEI Yi-Bin, GUO Wei, ZHOU Xing-Fei, MA Guo-Liang, WANG Kun. Proton Halo or Skin in the Excited States of Light Nuclei. Chin. Phys. Lett., 2003, 20(7): 1021-1024.
2003, Vol. 20 
