The γ-ray spectrometer HORUS and its applications for nuclear astrophysics
The γ-ray spectrometer HORUS and its applications for nuclear astrophysics
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DOI：
10.1016/j.nima.2014.04.025
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发表时间：
2014-05
影响因子：
1.4
通讯作者：
L. Netterdon;V. Derya;J. Endres;C. Fransen;A. Hennig;J. Mayer;C. Müller-Gatermann;A. Sauerwein;P. Scholz;M. Spieker;A. Zilges
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文献类型：
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作者：
L. Netterdon;V. Derya;J. Endres;C. Fransen;A. Hennig;J. Mayer;C. Müller-Gatermann;A. Sauerwein;P. Scholz;M. Spieker;A. Zilges
介绍了一种用于测量与天体物理相关的带电粒子诱导反应绝对截面的专用装置。这些通常非常低的天体物理能量截面对于改进重核核合成过程的建模非常重要。特别强调的是在天体物理γ过程中原子核的产生。最近开发的装置利用了位于科隆核物理研究所的10 MV FN串联离子加速器上的高效γ射线光谱仪HORUS。本文将介绍该装置的设计，并讨论最近测量的89y (p,γ)90Zr反应的结果。与现有数据的良好一致性表明，HORUS光谱仪是使用高纯度锗探测器进行光束内法测定总截面和部分截面的强大工具。
A dedicated setup for the in-beam measurement of absolute cross-sections of astrophysically relevant charged-particle induced reactions is presented. These, usually very low, cross-sections at energies of astrophysical interest are important to improve the modeling of the nucleosynthesis processes of heavy nuclei. Particular emphasis is put on the production of thepnuclei during the astrophysical γ process. The recently developed setup utilizes the high-efficiency γ-ray spectrometer HORUS, which is located at the 10 MV FN tandem ion accelerator of the Institute for Nuclear Physics in Cologne.The design of this setup will be presented and results of the recently measured89Y(p,γ)90Zr reaction will be discussed. The excellent agreement with existing data shows that the HORUS spectrometer is a powerful tool to determine total and partial cross-sections using the in-beam method with high-purity germanium detectors.