Study of heavy di-nuclear systems

S. Heinz (1) , V. Comas (1) , S. Hofmann (1) , D. Ackermann (1) , J. Heredia (1) , F.P. Hessberger (1) , J. Khuyagbaatar (1) , B. Kindler (1) , B. Lommel (1) , R. Mann (1) , C. Golabek (2) , W. Mittig (2) , F. Rejmund (2) , A.C.C. Villari (2)

1 GSI - Helmholtz zentrum für Schwerionenforschung GmbH
2 GANIL - Grand Accélérateur National d'Ions Lourds

We investigated di-nuclear system formation with successive nucleon transfer at beam energies at and below the barrier in the superheavy systems 64 28Ni +207 82Pb (Zproj.+ Ztarget = 110) and 238 92U +238 92U (Zproj.+ Ztarget = 184). In both collision systems we observed a massive transfer of nucleons correlated with the dissipation of the entire kinetic energy. The results are in accordance with the two-center shell model which assumes the formation of a di-nuclear system as first step to fusion. The experiments have been performed at the velocity filter SHIP (GSI) and at the VAMOS spectrometer (GANIL).

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

S. Heinz, V. Comas, S. Hofmann, D. Ackermann, J. Heredia, et al.. Study of heavy di-nuclear systems. The 10th International Conference on Nucleus-Nucleus collisions (NN2009), Aug 2009, Beijing, China. pp.362c-365c, ⟨10.1016/j.nuclphysa.2010.01.040⟩. ⟨in2p3-00459366⟩