Reaction rates for the K-39(p, gamma)Ca-40 reaction

Longland R.; Dermigny J.; Marshall C.

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Reaction rates for the K-39(p, gamma)Ca-40 reaction

机译：K-39（P，GAMMA）Ca-40反应的反应速率

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The magnesium-potassium anticorrelation observed in globular cluster NGC2419 can be explained by nuclear burning of hydrogen in hot environments. The exact site of this nuclear burning is, as yet, unknown. In order to constrain the sites responsible for this anticorrelation, the nuclear reactions involved must be well understood. The K-39 + p reactions are one such pair of reactions. Here, we report a new evaluation of the K-39(p, gamma)Ca-40 reaction rate by taking into account ambiguities and measurement uncertainties in the nuclear data. The uncertainty in the K-39(p, gamma)Ca-40 reaction rate is larger than previously assumed, and its influence on nucleosynthesis models is demonstrated. We find the K-39(p, gamma)Ca-40 reaction cross section should be the focus of future experimental study to help constrain models aimed at explaining the magnesium-potassium anticorrelation in globular clusters.

机译：在热环境中氢燃烧的氢气核燃料可以解释在球状簇NGC2419中观察到的镁 - 钾反尿。这种核燃料的确切部位是未知的。为了限制负责这种反检查的遗址，必须清楚涉及所涉及的核反应。 K-39 + P反应是一种这样的反应。在这里，我们通过考虑到核数据中的歧义和测量不确定性，举报K-39（P，GAMMA）CA-40反应率的新评估。 K-39（P，GAMMA）Ca-40反应速率的不确定性大于先前假设，并证明了其对核酸合成模型的影响。我们发现K-39（P，GAMMA）CA-40反应横截面应该是未来实验研究的重点，以帮助约束模型，旨在解释球状簇中的镁钾抗干扰。

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《Physical review, C》 |2018年第2期|共13页
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Longland R.; Dermigny J.; Marshall C.;
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North Carolina State Univ Dept Phys Raleigh NC 27695 USA;

Triangle Univ Nucl Lab Durham NC 27708 USA;

North Carolina State Univ Dept Phys Raleigh NC 27695 USA;

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正文语种 eng
中图分类原子核物理学、高能物理学;
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机译：K-39（P，GAMMA）Ca-40反应的反应速率
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Reaction rates for the K-39(p, gamma)Ca-40 reaction

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