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首页> 外文期刊>Physical review, C >Searching for (gamma, alpha)/(gamma, n) branching points in the gamma-process path near A=100
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Searching for (gamma, alpha)/(gamma, n) branching points in the gamma-process path near A=100

机译：在A = 100附近的伽玛处理路径中搜索（Gamma，Alpha）/（伽玛，N）分支点

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摘要

Four (alpha, gamma) cross-section measurements on stable nuclei in the A = 100 mass range were performed at the University of Notre Dame Nuclear Science Laboratory. The Pd-102(alpha, gamma)Cd-106 and Cd-110(alpha, gamma)Sn-114 reactions were measured for the first time. The Zr-90(alpha, gamma)Mo-94 and Cd-108(alpha, gamma)Sn-112 results extended the measured range down to energies lower than those of the previous experiments. These reactions were studied as possible branching points in gamma-process reaction networks. The measured cross-section values were compared to the NONSMOKER database as well as to calculations performed with TALYS 1.9. The combination of parameters available in TALYS that gave the best fit to the data was found and the corresponding reaction rates were obtained. The inverse (gamma, alpha) rates were then obtained and compared to the corresponding (gamma, n) rates to investigate the relative strength between the two reaction pathways. It was found that in all four cases the (gamma, alpha) reaction pathway begins to dominate within the 1.5-3.5 GK temperature range.
机译：在稳定核上的四个（alpha，γ）横截面测量在Notre Dame核科学实验室大学进行了稳定核。 PD-102（α，γ）CD-106和CD-110（α，γ）Sn-114反应首次测量。 Zr-90（α，γ）Mo-94和CD-108（α，γ）Sn-112结果将测量范围延伸到低于先前实验的能量。在γ-过程反应网络中研究了这些反应作为可能的分支点。将测量的横截面值与Nonsmoker数据库进行比较，以及用TATYS 1.9执行的计算。发现了发出最适合数据的故事中可用的参数的组合，并获得相应的反应速率。然后获得逆（γ，α）速率并与相应的（γ，N）速率进行比较，以研究两种反应途径之间的相对强度。发现在所有四种情况下，（γ，α）反应途径开始在1.5-3.5 GK温度范围内占据主导地位。

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