Jπ=19/2-isomerism and direct β decay in 53Co elucidated by ab initio calculations

被引：0

作者：

Yuan, Q. ^{[1
,2
,3
,4
]}

Hu, B. S. ^{[5
]}

Xu, X. Y. ^{[1
,2
]}

Li, J. G. ^{[3
,4
]}

Xu, F. R. ^{[1
,2
,4
,6
]}

Walker, P. M. ^{[6
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

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

[3] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

[4] Chinese Acad Sci, Inst Modern Phys, Southern Ctr Nucl Sci Theory, Huizhou 516000, Peoples R China

[5] TRIUMF, Vancouver, BC V6T 2A3, Canada

[6] Univ Surrey, Dept Phys, Guildford GU2 7XH, England

来源：

PHYSICAL REVIEW C | 2025年 / 111卷 / 03期

基金：

中国国家自然科学基金; 英国科学技术设施理事会;

关键词：

SIMILARITY RENORMALIZATION-GROUP; PROTON RADIOACTIVITY; TRANSITIONS;

D O I：

10.1103/PhysRevC.111.034309

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：

The 53Co 19/2- isomer at 3174 keV is a special metastable state that is the first proton emitter discovered. It is also important in nuclear astrophysics. In this paper, we present ab initio calculations that provide a comprehensive understanding of the structure, beta decay, and formation mechanism of the isomer. The calculations were performed by the valence-space in-medium similarity renormalization group based on chiral effective field theory (chi EFT) nuclear forces with the three-nucleon force included. It is found that the three-nucleon force plays a crucial role in the formation of the 19/2- isomer. The 53mCo (19/2-) lifetime is mainly determined by the beta decay into 53mFe (19/2-), which was calculated with a quenching factor obtained by considering the chi EFT two-body currents.

引用

页数：7

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