BIVASH R BEHERA¹, SUBINIT ROY², P BASU², M K SHARAN², S JENA¹, M SATPATHY¹, M L CHATTERJEE² and S K DATTA³

¹ Department of Physics, Utkal University, Bhubaneswar 751 004, India

² Saha Institute of Nuclear Physics, Kolkata 700 064, India

³ Nuclear Science Centre, New Delhi 110 067, India

Abstract.

Anisotropies in fission fragment angular distributions measured for the system ¹⁶ O + ¹⁸¹Ta over a range of bombarding energies from 83 MeV to 120 MeV have been analysed. It is shown that statistical transition state model (TSM) with pre-scission neutron correction described adequately the measured anisotropy data. Strong friction parameter is found to be necessary to estimate the pre-saddle to pre-scission neutron ratio.

Keywords:  Fusion--fssion; saddle-point model.

Pacs Nos.  25.70.Jj