Shell Model Calculations for Neutron-rich Mn Isotopes

JIN Hua; WANG Hankui; SUN Yang

doi:10.11804/NuclPhysRev.33.03.268

Recently,we have carried out a series of studies on the structures of pf shell neutron-rich nuclei around N=40 using the spherical shell model and the projected shell model respectively.As an example,these two types of shell model calculations for the neutron-rich odd-odd isotopes ^58,60Mn are discussed in this paper.The results show that both the calculations reproduce the observed experimental energy levels from the lowexcitation states to the high-spin ones in ^58,60Mn.Consistent results are also obtained by these two theoretical calculations when describing the negative-parity rotational band derived from the intruder neutron g_9/2 orbital in both isotopes.Through comparison,we show the applicability of these two shell model methods and the adopted effective interactions in the present neutron-rich mass region.The significance of the excitations from neutron g_9/2 orbital to the structures of the neutron-rich nuclei in pf shell with Z≤28 are especially emphasized in this paper.

Shell Model Calculations for Neutron-rich Mn Isotopes

1. Department of Mathematics and Physics, Shanghai Dianji University, Shanghai 201306, China;

2. College of Physics and Telecommunication Engineering, Zhoukou Normal University, Zhoukou 466000, Henan, China;

3. Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;

4. Key Laboratory of High Precision Nuclear Spectroscopy, Insititute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Funds: National Natural Science Foundation of China(11505302, 11135005, 11575112); Project Funded by the Key Laboratory of High Precision Nuclear Spectroscopy, Insititute of Modern Physics, Chinese Academy of Sciences

Received Date: 2016-07-18

Rev Recd Date: 2016-08-11

Publish Date: 2016-09-20

Key words:

Abstract: Recently,we have carried out a series of studies on the structures of pf shell neutron-rich nuclei around N=40 using the spherical shell model and the projected shell model respectively.As an example,these two types of shell model calculations for the neutron-rich odd-odd isotopes ^58,60Mn are discussed in this paper.The results show that both the calculations reproduce the observed experimental energy levels from the lowexcitation states to the high-spin ones in ^58,60Mn.Consistent results are also obtained by these two theoretical calculations when describing the negative-parity rotational band derived from the intruder neutron g_9/2 orbital in both isotopes.Through comparison,we show the applicability of these two shell model methods and the adopted effective interactions in the present neutron-rich mass region.The significance of the excitations from neutron g_9/2 orbital to the structures of the neutron-rich nuclei in pf shell with Z≤28 are especially emphasized in this paper.

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Reference (31)

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Shell Model Calculations for Neutron-rich Mn Isotopes

doi: 10.11804/NuclPhysRev.33.03.268

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