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arXiv 2302.10102nucl-thastro-ph.SRnucl-ex
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重新审视轻核反应的伽莫夫因子

Revisiting the Gamow Factor of Reactions on Light Nuclei

Eunseok Hwang, Heamin Ko, Kyoungsu Heo, Myung-Ki Cheoun, Dukjae Jang

AI总结:

本文修正了传统伽莫夫因子的假设,发现轻核穿透概率依赖于核势深度,并展示了修正后轻核聚变反应穿透概率在库仑势垒附近升高及其对伽莫夫峰值能量和电子屏蔽效应的影响。

摘要:

本研究通过修正传统伽莫夫因子中使用的假设,增进了对轻核核反应中穿透概率(PPs)的理解。伽莫夫因子基于两个假设有效地描述了核反应中的穿透概率:粒子能量低于库仑势垒,以及忽略核相互作用势的依赖性。然而,我们发现这些假设对于轻核并不成立。通过排除这些假设的计算,我们得到了依赖于轻核核相互作用势深度的穿透概率。对于由实验聚变截面拟合得到的势深度,我们展示了轻核(D+D、D+T、D+$^3$He、p+D、p+$^6$Li 和 p+$^7$Li)的穿透概率在库仑势垒附近变得高于传统值。我们还讨论了修正后的穿透概率的影响,例如伽莫夫峰值能量的变化,这决定了实验中核截面能量范围的测量,以及电子屏蔽效应。

英文摘要:

This study provides an improved understanding of the penetration probabilities (PPs) in nuclear reactions of light nuclei by correcting the assumptions used in the conventional Gamow factor. The Gamow factor effectively describes the PP in nuclear reactions based on two assumptions: low particle energy than the Coulomb barrier and neglecting the dependence of nuclear interaction potential. However, we find that the assumptions are not valid for light nuclei. As a result of a calculation that excludes the assumptions, we obtain the PP that depends on the nuclear interaction potential depth for the light nuclei. For the potential depth fitted by the experimental fusion cross-section, we present that PPs of light nuclei (D+D, D+T, D+$^3$He, p+D, p+$^6$Li, and p+$^7$Li) become higher than the conventional one near the Coulomb barrier. We also discuss the implications of the modified PP, such as changes in the Gamow peak energy, which determine the measurement of the energy range of the nuclear cross-section in experiments, and the electron screening effect.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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