Neutron-induced cross sections
Neutron-induced cross sections
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DOI：
10.1140/epjp/i2018-12295-3
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发表时间：
2018-10
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通讯作者：
R. Reifarth;P. Erbacher;S. Fiebiger;K. Göbel;T. Heftrich;M. Heil;F. Käppeler;N. Klapper;D. Kurtulgil;C. Langer;C. Lederer-Woods;A. Mengoni;B. Thomas;S. Schmidt;M. Weigand;M. Wiescher
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作者：
R. Reifarth;P. Erbacher;S. Fiebiger;K. Göbel;T. Heftrich;M. Heil;F. Käppeler;N. Klapper;D. Kurtulgil;C. Langer;C. Lederer-Woods;A. Mengoni;B. Thomas;S. Schmidt;M. Weigand;M. Wiescher
中子俘获截面是比铁更重元素恒星核合成模型中最重要的核输入之一。激活技术和飞行时间法主要用于实验确定所需的数据。实验技术的最新发展允许对放射性同位素进行新的实验。基于蒙特卡罗的分析方法为以前测量的系统不确定性提供了新的见解。我们概述了最先进的实验技术，对keV范围内197 Au（n，）横截面进行了详细的新评估，并对过去相对于金横截面测量的另外63种同位素进行了相应的重新评估。
Neutron capture cross sections are one of the most important nuclear inputs to models of stellar nucleosynthesis of the elements heavier than iron. The activation technique and the time-of-flight method are mostly used to determine the required data experimentally. Recent developments of experimental techniques allow for new experiments on radioactive isotopes. Monte Carlo based analysis methods give new insights into the systematic uncertainties of previous measurements. We present an overview over the state-of-the-art experimental techniques, a detailed new evaluation of the197Au(n,) cross section in the keV-regime and the corresponding re-evaluation of 63 more isotopes, which have been measured in the past relative to the gold cross section.