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HK: Fachverband Physik der Hadronen und Kerne
HK 31: Physik mit schweren Ionen
HK 31.6: Talk
Wednesday, March 14, 2007, 15:30–15:45, F
Application of Skyrme energy-density functional to heavy-ion fusion reactions — •Ning Wang1, Zhuxia Li2, Xizhen Wu2, Min Liu2, Enguang Zhao3, and Werner Scheid1 — 1Institute of Theoretical Physics, Justus-Liebig-University Giessen, Germany — 2China Institute of Atomic Energy, Beijing 102413, PR China — 3Institute of Theoretical Physics, Chinese Academic of Science, Beijing 100080, PR China
The Skyrme energy-density functional has been applied to the study of heavy-ion fusion reactions[1]. Barriers for fusion reactions are calculated with the Skyrme energy-density functional within the extended semi-classical Thomas-Fermi method. Based on the fusion barrier obtained, we propose a parametrization of the empirical barrier distribution to take into account the multi-dimensional character of real barrier. We apply this distribution to calculate the fusion excitation functions in terms of barrier penetration concept. A large number of measured fusion excitation functions can be reproduced well. The competition between suppression and enhancement effects in the sub-barrier fusion caused by neutron shell-closure and excess neutron effects is studied. For heavy systems, the capture cross sections are calculated and suitable incident energies for the synthesis of super-heavy nuclei are investigated[2].
[1] Min Liu, Ning Wang, et al., Nucl. Phys. A 768 (2006) 80.
[2] Ning Wang, Xizhen Wu, et al., Phys. Rev. C 74 (2006) 044604.