Sub-barrier fusion hindrance in F+Bi reaction

Nishinaka, Ichiro; Kasamatsu, Yoshitaka*; Tanikawa, Masashi*; Goto, Shinichi*; Asai, Masato  

Unexpected steep falloff of fusion cross sections has recently been observed in heavy-ion fusion reactions at sub-barrier energies. In this work, the fusion-fission cross sections of 0.08-650 mb for F+Bi at incident beam energies of 83-135 MeV were determined by a radiochemical method in order to study sub-barrier fusion hindrance. We will discuss the sub-barrier fusion hindrance in the present reaction, comparing theoretical calculations and experimental data.