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International Workshop on Multifragmentation and Related Topics - IWM2011, Caen : France (2011)
Evolution of isotopic fission-fragment yields with excitation energy
O. Delaune1, M. Caamano, X. Derkx1, F. Farget1, K.-H. Schmidt, O.B. Tarasov, L. Audouin2, A.M. Amthor1, C.-O. Bacri2, G. Barreau3, B. Bastin1, D. Bazin, J. Benlliure, B. Blank3, L. Caceres1, E. Casarejos, B. Fernandez-Domınguez, L. Gaudefroy4, C. Golabek, S. Grévy1, B. Jurado3, O. Kamalou1, A. Lemasson1, S.M. Lukyanov, W. Mittig, D.J. Morrissey, A. Navin1, J. Pereira, L. Perrot2, M. Rejmund1, T. Roger1, M.G. Saint-Laurent1, H. Savajols1, C. Schmitt1, B.M. Sherrill, C. Stodel1, J. Taieb4, J.C. Thomas1, A.C.C. Villari5

Two fission experiments have been performed at GANIL using 238U beams at different energies and light targets. Different fissioning systems were produced with excitation energies from 10 to 230 MeV and their decay by fission was investigated with GANIL spectrometers. Preliminary fission-fragment isotopic distributions have been obtained. The evolution with impinging energy of their properties, the neutron excess and the width of the neutron-number distributions, gives important insights into the dynamics of fusion-fission mechanism.
1 :  GANIL - Grand Accélérateur National d'Ions Lourds
2 :  IPNO - Institut de Physique Nucléaire d'Orsay
3 :  CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
4 :  DAM/DIF - DAM Île-de-France
Physique/Physique Nucléaire Expérimentale