中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2671-2675.doi: 10.1088/1009-1963/16/9/030

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Effect of strong magnetic field on electron capture of iron group nuclei in crusts of neutron stars

刘晶晶, 罗志全, 刘宏林, 赖祥军   

  1. Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • 收稿日期:2006-12-12 修回日期:2007-07-02 出版日期:2007-09-20 发布日期:2007-09-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10347008).

Effect of strong magnetic field on electron capture of iron group nuclei in crusts of neutron stars

Liu Jing-Jing(刘晶晶), Luo Zhi-Quan(罗志全)†, Liu Hong-Lin(刘宏林), and Lai Xiang-Jun(赖祥军)   

  1. Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • Received:2006-12-12 Revised:2007-07-02 Online:2007-09-20 Published:2007-09-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10347008).

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摘要： In this paper electron capture on iron group nuclei in crusts of neutron stars in a strong magnetic field is investigated. The results show that the magnetic fields have only a slight effect on electron capture rates in a range of 10$^{8}-10^{13}$G on surfaces of most neutron stars, whereas for some magnetars the magnetic fields range from 10$^{13}$ to 10$^{18}$~G. The electron capture rates of most iron group nuclei are greatly decreased, reduced by even four orders of magnitude due to the strong magnetic field.

关键词: strong magnetic field, electron capture, neutron star

Abstract: In this paper electron capture on iron group nuclei in crusts of neutron stars in a strong magnetic field is investigated. The results show that the magnetic fields have only a slight effect on electron capture rates in a range of 10$^{8}-10^{13}$G on surfaces of most neutron stars, whereas for some magnetars the magnetic fields range from 10$^{13}$ to 10$^{18}$ G. The electron capture rates of most iron group nuclei are greatly decreased, reduced by even four orders of magnitude due to the strong magnetic field.

Key words: strong magnetic field, electron capture, neutron star

中图分类号:  (β-decay;double β-decay; electron and muon capture)

  • 23.40.-s
26.30.-k (Nucleosynthesis in novae, supernovae, and other explosive environments) 95.30.Cq (Elementary particle processes) 97.10.Cv (Stellar structure, interiors, evolution, nucleosynthesis, ages) 97.60.Jd (Neutron stars)