Assessing the adequacy of the bare optical potential in near-barrier fusion calculation

被引：0

作者：

L. F. Canto

P. R. S. Gomes

J. Lubian

M. S. Hussein

P. Lotti

机构：

[1] Universidade Federal do Rio de Janeiro,Instituto de Física

[2] Universidade Federal Fluminense,Instituto de Física

[3] Universidade de São Paulo,Instituto de Estudos Avançados

[4] Universidade de São Paulo,Instituto de Física

[5] INFN,undefined

来源：

The European Physical Journal A | 2014年 / 50卷

关键词：

Coulomb Barrier; Fusion Cross Section; Barrier Parameter; Bare Potential; Fusion Function;

D O I：

暂无

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学科分类号：

摘要：

We critically examine the differences among the different bare nuclear interactions used in near-barrier heavy-ion fusion analysis and coupled-channels calculations, and discuss the possibility of extracting the barrier parameters of the bare potential from above-barrier data. We show that the choice of the bare potential may be critical for the analysis of the fusion cross sections. Although this may seem trivial, several recent papers use different bare potentials and reach different conclusions, especially when weakly bound systems are considered and possible relatively small fusion cross section enhancements or suppressions are found. We show also that the barrier parameters taken from above-barrier data may be very wrong.

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