摘要
A shell-model investigation is performed to show the impact on the structure of ^14C from the off-diagonal cross-shell interaction, pp｜V ｜sdsd, which represents the mixing between the 0 and 2 ω configurations in the psd model space. The observed levels of the positive states in ^14C can be nicely described in 0-4 ω or a larger model space through the well defined Hamiltonians, YSOX and WBP, with a reduction of the strength of the pp｜V ｜sdsd interaction in the latter. The observed B（GT） values for ^14C can be generally described by YSOX, while WBP and their modifications of the〈 pp｜V｜sdsd〉interaction fail for some values. Further investigation shows the effect of such interactions on the configuration mixing and occupancy. The present work shows examples of how the off-diagonal cross-shell interaction strongly drives the nuclear structure.
A shell-model investigation is performed to show the impact on the structure of ^14C from the off-diagonal cross-shell interaction, pp｜V ｜sdsd, which represents the mixing between the 0 and 2 ω configurations in the psd model space. The observed levels of the positive states in ^14C can be nicely described in 0-4 ω or a larger model space through the well defined Hamiltonians, YSOX and WBP, with a reduction of the strength of the pp｜V ｜sdsd interaction in the latter. The observed B（GT） values for ^14C can be generally described by YSOX, while WBP and their modifications of the〈 pp｜V｜sdsd〉interaction fail for some values. Further investigation shows the effect of such interactions on the configuration mixing and occupancy. The present work shows examples of how the off-diagonal cross-shell interaction strongly drives the nuclear structure.
基金
Supported by National Natural Science Foundation of China(11305272)
Special Program for Applied Research on Super Computation of the NSFC Guangdong Joint Fund(the second phase)
the Guangdong Natural Science Foundation(2014A030313217)
the Pearl River S&T Nova Program of Guangzhou(201506010060)
the Tip-top Scientific and Technical Innovative Youth Talents of Guangdong special support program(2016TQ03N575)
the Fundamental Research Funds for the Central Universities(17lgzd34)
