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HK: Physik der Hadronen und Kerne
HK 50: Kernphysik VI / Spaltung
HK 50.8: Vortrag
Donnerstag, 25. März 1999, 15:45–16:00, B
Problems in description of fusion of heavy nuclei in adiabatic approach — •Gurgen Adamian1, Nikolai Antonenko1,2, Svetlana Ivanova1,2, and Werner Scheid1 — 1Institut f"ur Theoretische Physik der Justus-Liebig-Universit"at Giessen — 2Joint Institute for Nuc-
lear Research Dubna
Within the two-center shell model complete fusion of heavy nuclei is considered. With growing neck the nuclear system rapidly falls to the fission-type valley and then the fusion occurs due to diffusion in this valley to smaller elongations. The fusion probabilities obtained in this model are much larger than the values found from the experimental data. In order to describe the experimental data on the fusion of heavy nuclei, we have to assume a hindrance for the fast growth of neck and for the motion to smaller elongations of the system. The mechanisms for this hindrance are discussed. By using mass parameters calculated microscopically, the system lives a sufficient time in the dinuclear system configuration.
Supported by AvH–Stiftung(Bonn) and DFG(Bonn)