发表机构
Texas A&M University（德州农工大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究指出对12C+12C聚变反应的THM测量数据进行平面波分析失效，强调初末态库仑畸变的关键作用，表明平面波近似会严重扭曲聚变截面能量依赖，提取的天体物理因子不可靠。
AI 中文摘要
近期，Li等人[Phys. Lett. B (2026) 140675]报道了一项针对碳-碳聚变的新型木马方法（THM）测量。本研究旨在证明对该数据进行分析时所用平面波近似的失效，以及初态和末态中库仑畸变的关键作用。研究人员探究了利用16O+12C→αs+α+20Ne反应对12C+12C聚变反应进行THM分析的 underlying 反应机制，特别关注旁观者动量分布以及THM反应振幅对碳-碳相对能量E的依赖关系。研究表明，仅与测量得到的旁观者动量分布吻合并不能验证平面波近似；尽管实验动量分布可被重现，但在初态和末态均包含库仑畸变时，THM振幅的能量依赖关系与平面波结果完全不同。因此，从THM数据中提取的12C+12C聚变截面的能量依赖关系可能会因平面波处理而发生严重畸变。研究得出结论，平面波分析中提取的天体物理因子不可靠，可能会导致关于低能12C+12C聚变反应的误导性结论。
英文摘要
Recently, a new Trojan Horse Method (THM) measurement of carbon-carbon fusion was reported by Li \textit{et al.} [Phys. Lett. B (2026) 140675]. The purpose of the present work is to demonstrate the breakdown of the plane-wave approximation used in the analysis of these data and the critical role of Coulomb distortions in the initial and final states. The reaction mechanism underlying the THM analysis of the $^{12}\mathrm{C}+{}^{12}\mathrm{C}$ fusion reaction using the $^{16}\mathrm{O}+{}^{12}\mathrm{C}\to α_s+α+{}^{20}\mathrm{Ne}$ reaction is investigated. Particular attention is paid to the spectator momentum distribution and to the dependence of the THM reaction amplitude on the relative carbon-carbon energy $E$. It is demonstrated that agreement with the measured spectator momentum distribution does not by itself validate the plane-wave approximation. Although the experimental momentum distribution can be reproduced, inclusion of Coulomb distortions in both the initial and final channels leads to an energy dependence of the THM amplitude that is completely different from the plane-wave result. Consequently, the energy dependence of the $^{12}\mathrm{C}+{}^{12}\mathrm{C}$ fusion cross section extracted from the THM data can be strongly distorted by the plane-wave treatment. It is concluded that the astrophysical factor extracted in the plane-wave analysis cannot be regarded as reliable and may lead to misleading conclusions concerning the low-energy $^{12}\mathrm{C}+{}^{12}\mathrm{C}$ fusion reaction.
Comments9 pages, 8 figures
