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arXiv 0704.2827nucl-th
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深亚势垒熔合势垒阈值入射能量的系统学

Systematics of threshold incident energy for deep sub-barrier fusion hindrance

Takatoshi Ichikawa, Kouichi Hagino, Akira Iwamoto

摘要:

本文系统地计算了重离子反应在接触组态下的势能。我们指出,接触点处的能量,特别是用Krappe-Nix-Sierk(KNS)势估计的能量,与最近在几个极低能量系统中观察到的聚变截面陡降的阈值入射能有很强的相关性。这清楚地表明,急剧下降现象可以归因于目标和弹丸彼此接触后的动力学,例如,隧穿过程和重叠区的核饱和性质。

英文摘要:

We systematically evaluate the potential energy at the touching configuration for heavy-ion reactions using various potential models. We point out that the energy at the touching point, especially that estimated with the Krappe-Nix-Sierk (KNS) potential, strongly correlates with the threshold incident energy for steep fall-off of fusion cross sections observed recently for several systems at extremely low energies. This clearly indicates that the steep fall-off phenomenon can be attributed to the dynamics after the target and projectile touch with each other, e.g., the tunneling process and the nuclear saturation property in the overlap region.

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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