Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-05-16
AIP Conference Proceedings 853 (2006) 225-230
Physics
Nuclear Physics
Nuclear Theory
6 pages, 5 figures, To be published in the AIP Proceedings of FUSION06, International Conference on Reaction Mechanisms and Nu
Scientific paper
10.1063/1.2338382
A realistic microscopically-based quantum approach to the competition between fusion and quasi-fission in a heavy fusing system is applied to several reactions leading to $^{256}$No. Fusion and quasi-fission are described in terms of a diffusion process of nuclear shapes through a dynamical collective potential energy landscape which is initially diabatic and gradually becomes adiabatic. The microscopic ingredients of the theory are obtained with a realistic two-center shell model based on Woods-Saxon potentials. The results indicate that (i) the diabatic effects play a very important role in the onset of fusion hindrance for heavy systems, and (ii) very asymmetric reactions induced by closed shell nuclei seem to be the best suited to synthesize the heaviest compound nuclei.
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