20 Ne(α,p) 23 Na studied to constrain type Ia nucleosynthesis
20 Ne(α,p) 23 Na studied to constrain type Ia nucleosynthesis
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20 Ne(α,p) 23 Na 研究限制 Ia 型核合成
DOI：
10.1088/1742-6596/2586/1/012110
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Mitchell, A
中科院分区：
文献类型：
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作者：
Boomershine, C N;Bardayan, D W;Carmichael, S;Caves, L;Davis, A;deBoer, R J;Gula, A;Howard, K;Kelmar, R;Mitchell, A
20 Ne（α，p）23 Na反应速率在确定Ia型超新星中产生的各种核的最终丰度方面很重要。在此之前，基态横截面是使用详细的平衡从时间反转反应实验计算的。从这些研究中提取的反应速率没有考虑激发态的贡献，因此，只是估计。共振扫描，填充基态和第一激发态，进行了20 Ne（α，p）23 Na反应，测量2.9和5 MeV之间的质心能量在核科学实验室在圣母大学。数据分析正在进行中，初步结果显示激发态反应的贡献很大。
The 20 Ne (α, p) 23 Na reaction rate is important in determining the final abundances of various nuclei produced in type Ia supernovae. Previously, the ground state cross section was calculated from time reversal reaction experiments using detailed balance. The reaction rates extracted from these studies do not consider contributions from the population of excited states, and therefore, are only estimates. A resonance scan, populating both the ground and first excited states, was performed for the 20 Ne (α, p) 23 Na reaction, measuring between 2.9 and 5 MeV center of mass energies at the Nuclear Science Lab at the University of Notre Dame. Data analysis is underway and preliminary results show substantial contribution from the excited state reaction.