Continuum Skyrme Hartree–Fock–Bogoliubov theory with Green's function method for neutron-rich Ca, Ni, Zr, and Sn isotopes

En-Bo Huo

doi:10.1007/s41365-023-01261-9

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Continuum Skyrme Hartree–Fock–Bogoliubov theory with Green's function method for neutron-rich Ca, Ni, Zr, and Sn isotopes

NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH | Updated：2023-08-16

- Continuum Skyrme Hartree–Fock–Bogoliubov theory with Green's function method for neutron-rich Ca, Ni, Zr, and Sn isotopes
- Continuum Skyrme Hartree–Fock–Bogoliubov theory with Green's function method for neutron-rich Ca, Ni, Zr, and Sn isotopes
- 核技术（英文版） 2023年34卷第7期文章编号：105
- Affiliations：
  
  1.School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
  2.School of Mechatronics Engineering, Guizhou Minzu University, Guiyang 550025, China
  3.Department of Physics, School of Science, Tianjin University, Tianjin 300072, China
  4.Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology, Guangxi Normal University, Guilin 541004, China
- Author bio：
  
  † ttsunphy@zzu.edu.cn
- Funds：
  
  National Natural Science Foundation of China(U2032141);Open Project of Guangxi Key Laboratory of Nuclear Physics and Nuclear Technology(NLK2022-02);Central Government Guidance Funds for Local Scientific and Technological Development, China(Guike ZY22096024);Natural Science Foundation of Henan Province(202300410479);Guizhou Provincial Science and Technology Projects(ZK[2022]203);Foundation of Fundamental Research for Young Teachers of Zhengzhou University(JC202041041);Physics Research and Development Program of Zhengzhou University(32410217)
- DOI：10.1007/s41365-023-01261-9
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引用本文
Continuum Skyrme Hartree–Fock–Bogoliubov theory with Green's function method for neutron-rich Ca, Ni, Zr, and Sn isotopes[J]. 核技术（英文版）, 2023, 34(7):105

En-Bo Huo, Ke-Ran Li, Xiao-Ying Qu, et al. Continuum Skyrme Hartree–Fock–Bogoliubov theory with Green's function method for neutron-rich Ca, Ni, Zr, and Sn isotopes[J]. Nuclear Science and Techniques, 2023, 34(7):105
Continuum Skyrme Hartree–Fock–Bogoliubov theory with Green's function method for neutron-rich Ca, Ni, Zr, and Sn isotopes[J]. 核技术（英文版）, 2023, 34(7):105 DOI： 10.1007/s41365-023-01261-9.

En-Bo Huo, Ke-Ran Li, Xiao-Ying Qu, et al. Continuum Skyrme Hartree–Fock–Bogoliubov theory with Green's function method for neutron-rich Ca, Ni, Zr, and Sn isotopes[J]. Nuclear Science and Techniques, 2023, 34(7):105 DOI： 10.1007/s41365-023-01261-9.

摘要

Abstract

The possible exotic nuclear properties in the neutron-rich Ca, Ni, Zr, and Sn isotopes are examined with the continuum Skyrme Hartree–Fock–Bogoliubov theory in the framework of the Green's function method. The pairing correlation, the couplings with the continuum, and the blocking effects for the unpaired nucleon in odd-,A, nuclei are properly treated. The Skyrme interaction SLy4 is adopted for the ,ph, channel and the density-dependent ,δ, interaction is adopted for the ,pp, channel, which well reproduce the experimental two-neutron separation energies ,S,2n, and one-neutron separation energies ,S,n,. It is found that the criterion ,S,n,>,0 predicts a neutron drip line with neutron numbers much smaller than those for ,S,2,n,>,0. Owing to the unpaired odd neutron, the neutron pairing energies ,-E,pair, in odd-,A, nuclei are much lower than those in the neighboring even-even nuclei. By investigating the single-particle structures, the possible halo structures in the neutron-rich Ca, Ni, and Sn isotopes are predicted, where sharp increases in the root-mean-square (rms) radii with significant deviations from the traditional , $r \propto A^{1 / 3}$ , rule and diffuse spatial density distributions are observed. Analyzing the contributions of various partial waves to the total neutron density ,ρ,lj,(,r,)/,ρ,(,r,) reveals that the orbitals located around the Fermi surface—particularly those with small angular momenta—significantly affect the extended nuclear density and large rms radii. The number of neutrons ,N,λ, (,N,0,) occupying above the Fermi surface ,λ,n, (continuum threshold) is discussed, whose evolution as a function of the mass number ,A, in each isotope is consistent with that of the pairing energy, supporting the key role of the pairing correlation in halo phenomena.

关键词

Keywords

Neutron-rich nucleineutron haloSkyrme Hartree–Fock–Bogoliubov theoryGreen's function method

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