Nuclear β+/EC decays in covariant density functional theory and the impact of isoscalar proton-neutron pairing

被引：53

作者：

Niu, Z. M. ^{[1
]}

Niu, Y. F. ^{[2
]}

Liu, Q. ^{[1
]}

Liang, H. Z. ^{[3
,4
]}

Guo, J. Y. ^{[1
]}

机构：

[1] Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Peoples R China

[2] China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Peoples R China

[3] RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan

[4] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW C | 2013年 / 87卷 / 05期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevC.87.051303

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Self-consistent proton-neutron quasiparticle random phase approximation based on the spherical nonlinear point-coupling relativistic Hartree-Bogoliubov theory is established and used to investigate the beta(+)/electron-capture ( EC)-decay half-lives of neutron-deficient Ar, Ca, Ti, Fe, Ni, Zn, Cd, and Sn isotopes. The isoscalar proton-neutron pairing is found to play an important role in reducing the decay half-lives, which is consistent with the same mechanism in the beta decays of neutron-rich nuclei. The experimental beta(+)/EC-decay half-lives can be well reproduced by a universal isoscalar proton-neutron pairing strength.

引用

页数：5

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