约束最轻 p 核 74Se 的合成
核实验
2025-11-27 v1
摘要
我们提供了首个 反应的实验截面，以约束在爆发性恒星环境中 p 核 的主要破坏机制之一。该测量使用放射性 束流，在有效质心能量为 2.9 和 2.3 MeV/核子下进行。除了总截面测量外，还提取了 复合核的统计性质，从而约束了 过程上 Gamow 窗口内的反应截面。通过蒙特卡洛单区网络模拟，研究了实验约束的反应率对 II 型超新星中 产额的影响。结果表明，仅靠核物理无法解决 II 型超新星模型对 Se 的过量产生问题，并指出需要更详细地理解与 过程相关的天体物理条件。
引用
@article{arxiv.2511.20850,
title = {Constraining the Synthesis of the Lightest p Nucleus 74Se},
author = {A. Tsantiri and A. Spyrou and E. C. Good and K. Bosmpotinis and P. Giuliani and H. Arora and G. Balk and L. Balliet and H. C. Berg and J. M. Berkman and C. Dembski and P. DeYoung and P. A. Denissenkov and N. Dimitrakopoulos and A. Doetsch and T. Gaballah and R. Garg and A. Henriques and R. Jain and S. N. Liddick and S. Lyons and R. S. Lubna and B. Monteagudo Godoy and F. Montes and S. Nash and G. U. Ogudoro and J. Owens-Fryar and A. Palmisano-Kyle and J. Pereira and A. Psaltis and A. L. Richard and L. Roberti and E. K. Ronning and H. Schatz and A. Sebastian and M. Smith and M. K. Smith and C. S. Sumithrarachchi and C. Tinson and P. Tsintari and N. Tubaro and S. Uthayakumaar and A. C. C. Villari and E. Weissling and R. G. T. Zegers},
journal= {arXiv preprint arXiv:2511.20850},
year = {2025}
}
备注
9 pages, 4 figures, 1 table, published in Physical Review Letters as DOI: https://doi.org/10.1103/d7dr-h36j