Novel ansatz for charge radii in density functional theories
Novel ansatz for charge radii in density functional theories
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密度泛函理论中电荷半径的新颖模拟
DOI:
10.1103/physrevc.102.024307
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发表时间:
2020-04
影响因子:
3.1
通讯作者:
Shi-Sheng Zhang
中科院分区:
文献类型:
--
作者:
Rong An;Li-Sheng Geng;Shi-Sheng Zhang
Charge radii are one of the most fundamental properties of atomic nuclei characterizing their charge distributions. Though the general trend as a function of the mass number is well described by the A1/3 rule, some fine structure, such as the evolution along the calcium isotopic chain and the corresponding odd-even staggerings, are notoriously difficult to describe both in density functional theories and ab initio methods. In this work, we propose a novel ansatz to describe the charge radii of calcium isotopes by adding a correction term, proportional to the number of Cooper pairs and determined by the BCS amplitudes and a single parameter, to the charge radii calculated in the relativistic mean field model with the pairing interaction treated with the BCS method. It is shown that the new ansatz yields results consistent with data not only for calcium isotopes, but also for 10 other isotopic chains, including oxygen, neon, magnesium, chromium, nickel, germanium, zirconium, cadmium, tin, and lead. It is quite remarkable that this ansatz with a single parameter can describe nuclear charge radii throughout the periodic table, particularly the odd-even staggerings and parabolic behavior.
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影响因子:
--
作者:
L. Geng;H. Toki;S. Sugimoto;J. Meng
通讯作者:
L. Geng;H. Toki;S. Sugimoto;J. Meng
影响因子:
3.1
作者:
P. Reinhard;W. Nazarewicz
通讯作者:
P. Reinhard;W. Nazarewicz
DOI:
10.1088/1674-1137/42/11/114101
发表时间:
2018
期刊:
Chinese Physics. C
影响因子:
--
作者:
An Rong;Geng Lisheng;Zhang Shisheng;Liu Lang
通讯作者:
Liu Lang
影响因子:
3.1
作者:
Lulu Li;J. Meng;P. Ring;P. Ring;E. Zhao;E. Zhao;Shan-Gui Zhou
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Lulu Li;J. Meng;P. Ring;P. Ring;E. Zhao;E. Zhao;Shan-Gui Zhou
影响因子:
3.1
作者:
V. Somà;Petr Navrátil;F. Raimondi;F. Raimondi;C. Barbieri;T. Duguet;T. Duguet
通讯作者:
V. Somà;Petr Navrátil;F. Raimondi;F. Raimondi;C. Barbieri;T. Duguet;T. Duguet