Investigating the fission process at high excitation energies through proton induced reactions on 181Ta

In this work we have investigated total fission cross section of 181 Ta+ 1 Ha t FRS (FRagment Separator -GSI) at 1, 0.8, 0.5 and 0.3 GeV with an specific setup, pro- viding high accuracy measurements of the cross section values. We compare the results obtained in this experiment, with several calculations performed with the intra-nuclear cascade model (INCL v4.1) coupled to de-excitation code (ABLAv3p), according to two different models describing fission process at high-excitation energies: statistical model of Bohr and Wheeler and the dynamical description of the fission process. The compar- ison with data of previous experiments is also discussed in order to address the existing discrepancies with this new results.