The fusion-fission process in the reaction 34S+186W near the interaction barrier

International audience; The reaction 34S + 186W at Elab=160 MeV was investigated with the aim of diving into the features of thefusion-fission process. Gamma rays in coincidence with binary reaction fragments were measured using the high efficiencygamma-ray spectrometer ORGAM at the TANDEM Accelerator facility of I.P.N., Orsay, and the time-of-flight spectrometerfor fission fragments (FF) registration CORSET of the Flerov Laboratory of Nuclear Reactions (FLNR), Dubna. The couplingof the ORGAM and CORSET setups offers the unique opportunity of extracting details for characterizing the fusion-fissionprocess and gives information regarding production of neutron-rich heavy nuclei. The FF-$\gamma$ coincidence method is of betteruse then the $\gamma$ - $\gamma$ coincidence method when dealing with low statistic measurements and also offers the opportunity toprecisely correct the Dopler shift for in-flight emitted gamma rays.Evidence of symmetric and asymmetric fission modes were observed in the mass and TKE distributions, occurring due toshell effects in the fragments. Coincident measurements allow for discrimination between the gamma rays by accepting aspecific range within the mass distribution of the reaction products. Details regarding the experimental setup, methods ofprocessing the acquisitioned data and preliminary results are presented.