Capture cross section measurements of krypton and xenon isotopes and the fundamental parameters of the s-process
Capture cross section measurements of krypton and xenon isotopes and the fundamental parameters of the s-process
复制标题
捕获氪和氙同位素的横截面测量值以及 s 过程的基本参数
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
H. Beer
中科院分区：
文献类型：
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作者：
H. Beer
用快速循环活化技术测定了Kr和Xe同位素的俘获截面。这些数据被用于用现象学模型进行s过程计算。对弱组分和主要组分进行了研究。在模型框架内确定了天体物理参数，即铁种子丰度、中子暴露、铁种子捕获的平均中子数、中子暴露的温度依赖性、中子密度、温度和电子密度。测定了太阳中Kr和Xe的丰度。根据Kr-85分支估计了脉冲s过程的脉宽。研究了同位素异常Xe- s （s-process Xe）。参51。
The capture cross sections of Kr and Xe isotopes have been determined by a fast cyclic activation technique. The data were used to perform s-process calculations with phenomenological models. The weak and the main s-process component were studied. Astrophysical parameters were determined in the frame of the model, i.e., iron seed abundance, the neutron exposure, average number of neutrons captured by the iron seed, the temperature dependence of the neutron exposure, neutron density, temperature, and electron density. The solar abundances of Kr and Xe were determined. From the Kr-85 branching the pulse width of a pulsed s-process was estimated. The isotopic anomaly Xe-S, s-process Xe, was investigated. 51 refs.