Nuclear shell effects near the r-process path in the relativistic Hartree-Bogoliubov theory -: art. no. 044301

被引:16
|
作者
Sharma, MM [1 ]
Farhan, AR [1 ]
机构
[1] Kuwait Univ, Dept Phys, Safat 13060, Kuwait
来源
PHYSICAL REVIEW C | 2002年 / 65卷 / 04期
关键词
D O I
10.1103/PhysRevC.65.044301
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
We have investigated the evolution of the shell structure of nuclei in going from the r-process path to the neutron drip line within the framework of the relativistic Hartree-Bogoliubov (RHB) theory. By introducing the quartic self-coupling of omega meson in the RHB theory in addition to the nonlinear scalar coupling of sigma meson, we reproduce the available data on the shell effects about the waiting-point nucleus Zn-80. With this approach, it is shown that the shell effects at N=82 in the inaccessible region of the r-process path become milder as compared to the Lagrangian with the scalar self-coupling only. However, the shell effects remain stronger as compared to the quenching exhibited by the HFB+SkP approach. It is also shown that in reaching out to the extreme point at the neutron drip line, a terminal situation arises where the shell structure at the magic number is washed out significantly.
引用
收藏
页数:8
相关论文
共 50 条
  • [31] Changes in r-process abundances at late times -: art. no. 035801
    Surman, R
    Engel, J
    PHYSICAL REVIEW C, 2001, 64 (03): : 358011 - 358018
  • [32] r-process nucleosynthesis without excess neutrons -: art. no. 231101
    Meyer, BS
    PHYSICAL REVIEW LETTERS, 2002, 89 (23)
  • [33] Evolution of N = 20, 28, 50 shell closures in the 20 ≤ Z ≤ 30 region in deformed relativistic Hartree-Bogoliubov theory in continuum
    郑茹尤
    孙向向
    申国防
    耿立升
    Chinese Physics C, 2024, 48 (01) : 148 - 157
  • [34] Evolution of N=20, 28, 50 shell closures in the 20 ≤ Z ≤ 30 region in deformed relativistic Hartree-Bogoliubov theory in continuum
    Zheng, Ru-You
    Sun, Xiang-Xiang
    Shen, Guo-fang
    Geng, Li-Sheng
    CHINESE PHYSICS C, 2024, 48 (01)
  • [35] Predictive power for superheavy nuclear mass and possible stability beyond the neutron drip line in deformed relativistic Hartree-Bogoliubov theory in continuum
    Zhang, Kaiyuan
    He, Xiaotao
    Meng, Jie
    Pan, Cong
    Shen, Caiwan
    Wang, Chen
    Zhang, Shuangquan
    PHYSICAL REVIEW C, 2021, 104 (02)
  • [36] Axially symmetric Hartree-Fock-Bogoliubov calculations for nuclei near the drip lines -: art. no. 064314
    Terán, E
    Oberacker, VE
    Umar, AS
    PHYSICAL REVIEW C, 2003, 67 (06):
  • [37] Strength of nuclear shell effects at N=126 in the r-process region
    Farhan, AR
    Sharma, MM
    PHYSICAL REVIEW C, 2006, 73 (04):
  • [38] Neutrino-induced reaction rates for r-process nuclei -: art. no. 055803
    Hektor, A
    Kolbe, E
    Langanke, K
    Toivanen, J
    PHYSICAL REVIEW C, 2000, 61 (05): : 10
  • [39] Structure information on the r-process nucleus 135Sn -: art. no. 021302
    Korgul, A
    Mach, H
    Fogelberg, B
    Urban, W
    Kurcewicz, W
    Isakov, VI
    PHYSICAL REVIEW C, 2001, 64 (02): : 213021 - 213025
  • [40] Spin-orbit interaction near the neutron drip line and shell effects at N=82 near the r-process path
    Alabbar, A. N.
    Sharma, M. M.
    XXIII INTERNATIONAL SCHOOL ON NUCLEAR PHYSICS, NEUTRON PHYSICS AND APPLICATIONS, 2020, 1555