Influence of strong magnetic field on β decay in the crusts of neutron stars

doi:10.1088/1009-1963/15/7/016

中国物理B ›› 2006, Vol. 15 ›› Issue (7): 1477-1480.doi: 10.1088/1009-1963/15/7/016

Influence of strong magnetic field on β decay in the crusts of neutron stars

张洁, 刘门全, 罗志全

Institute of Theoretical Physics, China West Normal University,Nanchong 637002, China

收稿日期:2005-11-01 修回日期:2006-01-16 出版日期:2006-07-20 发布日期:2006-07-20
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No 10347008).

Influence of strong magnetic field on $\beta$ decay in the crusts of neutron stars

Zhang Jie (张洁), Liu Men-Quan (刘门全), Luo Zhi-Quan (罗志全)

Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China

Received:2005-11-01 Revised:2006-01-16 Online:2006-07-20 Published:2006-07-20
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No 10347008).

摘要/Abstract

摘要： βdecay in the strong magnetic field of the crusts of neutron stars is analysed by an improved method. The reactions ⁶⁷ Ni(β^-)⁶⁷ Cu and ⁶² Mn\beta ^-⁶² Fe are investigated as examples. The results show that a weak magnetic field has little effect on βdecay but a strong magnetic field (B>10¹²G) increases β decay rates obviously. The conclusion derived may be crucial to the research of late evolution of neutron stars and nucleosynthesis in r-process.

关键词: β decay, strong magnetic field, neutron star

Abstract: $\beta$ decay in the strong magnetic field of the crusts of neutron stars is analysed by an improved method. The reactions ⁶⁷ Ni($\beta$^-)⁶⁷ Cu and ⁶² Mn($\beta$^-)⁶² Fe are investigated as examples. The results show that a weak magnetic field has little effect on βdecay but a strong magnetic field (B >10¹²G) increases $\beta$ decay rates obviously. The conclusion derived may be crucial to the research of late evolution of neutron stars and nucleosynthesis in r-process.

Key words: $\beta$ decay, strong magnetic field, neutron star

中图分类号: (Neutron stars)

97.60.Jd

23.40.-s (β-decay;double β-decay; electron and muon capture) 95.30.Cq (Elementary particle processes)

张洁, 刘门全, 罗志全. Influence of strong magnetic field on β decay in the crusts of neutron stars[J]. 中国物理B, 2006, 15(7): 1477-1480.

Zhang Jie (张洁), Liu Men-Quan (刘门全), Luo Zhi-Quan (罗志全). Influence of strong magnetic field on $\beta$ decay in the crusts of neutron stars[J]. Chinese Physics, 2006, 15(7): 1477-1480.

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Influence of strong magnetic field on β decay in the crusts of neutron stars

Influence of strong magnetic field on $\beta$ decay in the crusts of neutron stars

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