| 中子星壳层中强磁场与β衰变 |
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| 引用本文： | 张洁,刘门全,罗志全.中子星壳层中强磁场与β衰变[J].云南大学学报(自然科学版),2006,28(3):227-230. |
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| 作者姓名： | 张洁 刘门全 罗志全 |
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| 作者单位： | 西华师范大学,理论物理研究所,四川,南充,637002 |
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| 基金项目： | 国家自然科学基金资助项目(10347008) |
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| 摘 要： | 基于原子核壳层模型,分析了在强磁场作用下中子星壳层中的β衰变率,并以反应63Co(β-)63Ni为例作详细计算.结果表明:弱磁场对中子星壳层中的β衰变几乎没有影响,强磁场(B>108T)使β衰变率显著增大;同时在相同的磁场强度下,基态的β衰变比激发态的β衰变所受影响更大.这些结论对进一步研究中子星晚期演化和双中子星系统快中子俘获过程的核合成是有意义的.
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| 关 键 词： | β衰变 强磁场 中子星 核合成 |
| 文章编号： | 0258-7971(2006)03-0227-04 |
| 修稿时间： | 2006年1月5日 |
The influence of strong magnetic field on beta decay in the crusts of neutron stars |
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| ZHANG Jie,LIU Men-quan,LUO Zhi-quan.The influence of strong magnetic field on beta decay in the crusts of neutron stars[J].Journal of Yunnan University(Natural Sciences),2006,28(3):227-230. |
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| Authors: | ZHANG Jie LIU Men-quan LUO Zhi-quan |
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| Institution: | Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China |
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| Abstract: | Based on the shell model of nuclei,β decay in the strong magnetic field of the crusts of neutron stars is analyzed.The reaction 63Co(β-)63Ni is investigated as an example.The results show that a weak magnetic field makes little effect on β decay but a strong magnetic field(B>108T) improves the rates of β decay obviously and the effect of magnetic field on ground β decay is larger than those of excited β decay.The conclusion derived may be crucial to research late evolution of neutron stars and nucleosynthesis in r-process. |
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| Keywords: | beta decay strong magnetic field neutron stars nucleosynthesis |
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