Nuclear structure of proton-rich unstable nucleus 28P studied by g-factor measurement*

摘要：

Nuclear structure of proton-rich unstable nucleus 28P has been studied by measuring its g-factor for the first time. The g-factor of 28P (Iπ =3+, T1/2=270.3 ms) was measured by means of β-NMR technique combined with the new polarization technique for charge exchange reaction product in the intermediate energy heavy ion collisions. The obtained g-factor of g=0.1028(27) is very much quenched from the Schmidt value,but is well reproduced by the shell model (+0.102). In connection with the magnetic moment of the mirror partner and the β-ray transition probability, the orbital angular momenta and intrinsic spins of protons and neutrons have been determined as 〈lp〉=0.43(29), 〈ln〉=1.85(29), 〈Sp〉=0.28(4), and 〈Sn〉=0.44(4).

关键词： 28P, β-NMR, nuclear magnetic moment, ezotic nuclei

作者: ZHENG Yong-Nan T.Nagatomo T.Izumikawa S.Takahashi H.Hirano T.Ohtsubo S.Momota Y.Nojiri A.Kitagawa M.Kanazawa M.Torikoshi ZHOU Dong-Mei S.Sato T.Minamisono J.R.Alonso G.F.Krebs T.J.M.Symons YUAN Da-Qing ZUO Yi FAN Ping T.Suzuki ZHANG Xi-Zhen K.Matsuta ZHU Sheng-Yun M.Mihara M.Fukuda D.Nishimura J.Komurasaki D.Ishikawa R.Matsumiya

作者单位: China Institute of Atomic Energy, P.O.Box 275-50, Beijing 102413, China RIKEN, Wako, Saitama 351-0198, Japan RI Center, Niigata University, Niigata 951-8510, Japan Department of Physics, Niigata University, Niigata 950-2181, Japan Kochi University of Technology, Kochi 782-8502, Japan National Institute of Radiological Sciences, Inage-ku, Chiba 263-8555, Japan Fukui University of Technology, Fukui 910-8505, Japan Lawrence Berkeley Laboratory, Berkeley, CA94720, USA Department of Physics, Nihon University, Tokyo 156, Japan Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan

会议类型: 国际会议

会议名称: 第十二届全国核结构研讨会暨第八次全国核结构专题讨论会(12th National Conference on Nuclear Structure and the 8th Symposium on Nuclear Structure)

会议地点: 重庆

会议语种:英文

页码: 215-217

在线出版日期: 2008-05-10（万方平台首次上网日期，不代表论文的发表时间）