Charge radii of potassium isotopes in the RMF (BCS) approach
Charge radii of potassium isotopes in the RMF (BCS) approach
复制标题
RMF (BCS) 方法中钾同位素的电荷半径
DOI：
10.1088/1674-1137/ac4b5c
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Zhang Fengshou
中科院分区：
文献类型：
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作者：
An Rong;Zhang Shisheng;Geng Lisheng;Zhang Fengshou
We apply the recently proposed RMF (BCS) ansatz to study the charge radii of the potassium isotopic chain up to ~(52)K. It is shown that the experimental data can be reproduced rather well, qualitatively similar to the Fayans nuclear density functional theory, but with a slightly better description of the odd–even staggerings (OES). Nonetheless, both methods fail for ~(50)K and to a lesser extent for ~(48,52)K. It is shown that if these nuclei are deformed with a β_(20)≈-0.2, then one can obtain results consistent with experiments for both charge radii and spin-parities. We argue that beyond-mean-field studies are needed to properly describe the charge radii of these three nuclei, particularly for ~(50)K.
