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arXiv 1209.1491nucl-ex
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再论聚变激发函数

Fusion excitation function revisited

Ph. Eudes, Z. Basrak, F. Sébille, V. de la Mota, G. Royer, M. Zorić

摘要:

我们报告了能量范围为4-155 A. MeV的各种系统的聚变-蒸发和/或聚变-裂变截面的综合系统学。以反应截面为标度,虽然当数据按质量不对称性排序时存在高度的相关性,但熔合截面并不表现出对所有体系都适用的普适行为,对于较轻且接近质量对称的体系,完全和不完全熔合激发函数的主要特征可以精确确定.尽管在15A.MeV以上的所有重系统中明显缺乏数据,但现有的数据表明,几何效应可以解释在入射能量高达155A.MeV时不完全聚变的持续性。

英文摘要:

We report on a comprehensive systematics of fusion-evaporation and/or fusion-fission cross sections for a very large variety of systems over an energy range 4-155 A.MeV. Scaled by the reaction cross sections, fusion cross sections do not show a universal behavior valid for all systems although a high degree of correlation is present when data are ordered by the system mass asymmetry.For the rather light and close to mass-symmetric systems the main characteristics of the complete and incomplete fusion excitation functions can be precisely determined. Despite an evident lack of data above 15A.MeV for all heavy systems the available data suggests that geometrical effects could explain the persistence of incomplete fusion at incident energies as high as 155A.MeV.

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