Evaporation residue excitation function measurement for the16O+194Ptreaction

Evaporation residue cross sections for the reaction ${}^{16}\text{O}+{}^{194}\text{Pt}$ were measured at beam energies in the range 75.4--103.1 MeV using the gas-filled separator Hybrid Recoil Mass Analyzer at the Inter University Accelerator Centre, New Delhi. The transmission efficiency of the separator was obtained using the calibration system ${}^{16}\text{O}+{}^{184}\text{W}$ and a Monte Carlo simulation code. Measured evaporation residue cross sections were fitted with statistical model calculations using Kramers' formula. The present measurement provides further evidence for the onset of dissipative forces in fission in the mass $\ensuremath{\sim}$200 region.