论文标题
在科隆实验室研究$γ$核天体物理学的$γ$过程的实验技术
Experimental techniques to study the $γ$ process for nuclear astrophysics at the Cologne accelerator laboratory
论文作者
论文摘要
德国科隆大学核物理学研究所的核天体物理学设置致力于测量带电粒子引起的在天体相关能量的总和部分横截面。这些可观察物是各种恒星情景反应网络计算的关键要素，对于理解元素的核合成至关重要。该实验利用了高效$γ$ -Ray光谱仪和10 mV FN倾斜加速器。将提出一个更新的目标腔以及过去几年中建立的进一步实验方法，该方法允许测量横截面至NB区域。测得的横截面的可靠性通过$^{89} $ y（p，$γ$）$^{90} $ ZR调试实验证明。此外，还将提出核天体物理学的申请。与以前报道的结果相比，将讨论$^{93} $ nb（p，$γ$）$^{94} $ mo实验的结果及其偏差。
The nuclear astrophysics setup at the Institute for Nuclear Physics, University of Cologne, Germany is dedicated to measurements of total and partial cross sections of charged-particle induced reactions at astrophysically relevant energies. These observables are key ingredients for reaction network calculations of various stellar scenarios, and crucial for the understanding of the nucleosynthesis of elements. The experiments utilize the high-efficiency $γ$-ray spectrometer HORUS, and the 10 MV FN-Tandem accelerator. An updated target chamber as well as further experimental methods established in the last years will be presented which allow to measure cross sections down to the nb region. The reliability of the measured cross sections is proven by a $^{89}$Y(p,$γ$)$^{90}$Zr commissioning experiment. Additionally, an application for nuclear astrophysics will be presented. The results of a $^{93}$Nb(p,$γ$)$^{94}$Mo experiment will be discussed as well as their deviations compared to formerly reported results.
