Fission excitation function for 19F + 194,196,198Pt at near and above barrier energies

Abstract

Fission excitation functions for 19F + 194,196,198Pt reactions populating 213,215,217Fr compound nuclei are reported. Out of these three compound nuclei, 213Fr is a shell closed (N=126) compound nucleus and the other two are away from the shell closure. From a comparison of the experimental fission cross-sections with the statistical model predictions, it is observed that the fission cross-sections are underestimated by the statistical model predictions using shell corrected finite range rotating liquid drop model (FRLDM) fission barriers. Further the FRLDM fission barriers are reduced to fit the fission cross-sections over the entire measured energy range.