Indications of a shallow potential in $^{48}$Ca+$^{96}$Zr fusion reactions

Details Indications of a shallow potential in $^{48}$Ca+$^{96}$Zr fusion reactions Indications of a shallow potential in $^{48}$Ca+$^{96}$Zr fusion reactions

2009-06-12

arxiv.org/abs/0906.2399v1

Phys.Rev.C79:064619,2009

Physics

Nuclear Physics

Nuclear Theory

1 text file, 7 figures

Scientific paper

10.1103/PhysRevC.79.064619

Fusion data for $^{48}$Ca+$^{96}$Zr are analyzed by coupled-channels calculations. Puzzling features of a previous analysis are eliminated by applying a potential that has a shallow pocket in the entrance channel. Thus the observed $S$ factor for fusion, which develops a maximum at low energy, can be reproduced fairly well. The high-energy data can also be accounted for but that requires the use of a weak, short-ranged imaginary potential that absorbs the incoming flux near the location of the minimum of the potential pocket. Predictions of the fusion hindrance in other Ca+Zr systems are made and are compared with the systematics that has been developed previously.

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