Possible 1d5/2 and 2s1/2 Level Inversion in the Proton-Rich Nucleus 23Al
ZHANG Hu-Yong1, SHEN Wen-Qing1,3, REN Zhong-Zhou2, MA Yu-Gang1, CAI Xiang-Zhou1, ZHONG Chen1, WEI Yi-Bin1, CHEN Jin-Gen1
1Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800
2Department of Physics, Nanjing University, Nanjing 210008
3College of Sciences, Ningbo University, Ningbo 315211
Possible 1d5/2 and 2s1/2 Level Inversion in the Proton-Rich Nucleus 23Al
1Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai 201800
2Department of Physics, Nanjing University, Nanjing 210008
3College of Sciences, Ningbo University, Ningbo 315211
Abstract： The discovered proton halo nucleus of 23Al is investigated in the nonlinear relativistic mean-field (RMF) model with deformation using the NL075 force parameter. It is shown that there is an energy inversion between the (5/2)+(202) and (1/2)+(211) orbital in the 23Al nucleus, which may produce a large enhancement of the reaction cross section compared with the neighboring nuclei. Meanwhile, the NL075 force parameter may be better than the other RMF parameters for calculation of large deformed nucleus 23Al.
2002, Vol. 19 
