Evolution of isotopic fission-fragment yields with bombarding energy

O. Delaune (1) , M. Caamaño , F. Farget (1) , O.B. Tarasov , X. Derkx (1) , K.-H. Schmidt , L. Audouin , A.M. Amthor (1) , C.-O. Bacri (2) , G. Barreau (3) , B. Bastin (1) , Dominique Bazin , J. Benlliure , Bertram Blank , L. Caceres (1) , E. Casarejos , B. Fernández-Domínguez , L. Gaudefroy (4) , C. Golabek (1) , S. Grévy (1) , B. Jurado , O. Kamalou (1) , A. Lemasson (1) , S.M. Lukyanov , W. Mittig , D.J. Morrissey , A. Navin (1) , J. Pereira , L. Perrot (2) , M. Rejmund (1) , T. Roger (1) , M.G. Saint-Laurent (1) , H. Savajols (1) , C. Schmitt (1) , B.M. Sherrill , C. Stodel (1) , J. Taieb , J.C. Thomas (1) , A.C.C. Villari (5)

1 GANIL - Grand Accélérateur National d'Ions Lourds
2 IPNO - Institut de Physique Nucléaire d'Orsay
3 ACEN - Aval du cycle et Energie Nucléaire
4 DAM/DIF - DAM Île-de-France
5 PANTECHNIK S.A.

Two fission experiments have been performed at GANIL using 238U beams at different energies and light targets. Different fissioning systems were produced with centre of mass energies from 10 to 240 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.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

O. Delaune, M. Caamaño, F. Farget, O.B. Tarasov, X. Derkx, et al.. Evolution of isotopic fission-fragment yields with bombarding energy. The 13th International Conference on Nuclear Reaction Mechanisms, Jun 2012, Varenna, Italy. pp.235-240. ⟨in2p3-00855189⟩