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Photonuclear and radiative-capture reaction rates for nuclear astrophysics and transmutation: 92–100Mo, 88Sr, 90Zr, and 139La

机译:核天体物理学和trans变的光核和辐射捕获反应速率:92–100Mo,88Sr,90Zr和139La

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摘要

Experimental photoabsorption cross sections for the nuclei 92,94,96,98,100Mo, 88Sr, 90Zr, and 139La are used as an input for calculations of (γ,n), (γ,p), and (γ,α), as well as (n,γ), (p,γ), and (α,γ) cross sections and reaction rates at energies and temperatures relevant for nucleosynthesis network models and transmutation projects. The calculations are performed with the statistical-model code talys. The results are compared with those obtained by using different analytic standard parametrizations of γ-ray strength functions implemented in talys and with an energy-damped double-Lorentzian model. The radiative capture reaction cross sections are enhanced by the pygmy resonances in 88Sr, 90Zr, and 139La.
机译:原子核92、94、96、98、100Mo,88Sr,90Zr和139La的实验光吸收截面用作计算(γ,n),(γ,p)和(γ,α)的输入。以及(n,γ),(p,γ)和(α,γ)截面以及在能量和温度下与核合成网络模型和trans变项目相关的反应速率。使用统计模型代码表执行计算。将结果与通过使用在分析中实施的γ射线强度函数的不同分析标准参数化以及能量阻尼双洛伦兹模型获得的结果进行比较。辐射捕获反应的横截面通过88Sr,90Zr和139La中的侏儒共振得到增强。

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