Nucleon--nucleon interactions in the double folding model for fusion reactions
Zhang Gao-Long(张高龙)a)†, Liu Hao(刘浩)b), and Le Xiao-Yun(乐小云)a)
a Department of Physics, School of Science, Beijing University of Aeronautics and Astronautics, Beijing 100083, China; b Physics Laboratory, Lanzhou Commercial College, Lanzhou 730020, China
Abstract Nucleus--nucleus potentials are determined in the framework of double folding model for M3Y--Reid and M3Y--Paris effective nucleon--nucleon (NN) interactions. Both zero-range and finite-range exchange parts of NN interactions are considered in the folding procedure. In this paper the spherical projectile--spherical target system 16O+208Pb is selected for calculating the barrier energies, fusion cross sections and barrier distributions with the density-independent and density-dependent NN interactions on the basis of M3Y--Reid and M3Y--Paris NN interactions. The barrier energies become lower for Paris NN interactions in comparison with Reid NN interactions, and also for finite-range exchange part in comparison with zero-range exchange part. The density-dependent NN interactions give similar fusion cross sections and barrier distributions, and the density-independent NN interaction causes the barrier distribution moving to a higher position. However, the density-independent Reid NN interaction with zero-range exchange part gives the lowest fusion cross sections. We find that the calculated fusion cross sections and the barrier distributions are in agreement with the experimental data after renormalization of the nuclear potential due to coupled-channel effect.
Received: 19 April 2008
Revised: 27 August 2008
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 60572177).
Cite this article:
Zhang Gao-Long(张高龙), Liu Hao(刘浩), and Le Xiao-Yun(乐小云) Nucleon--nucleon interactions in the double folding model for fusion reactions 2009 Chin. Phys. B 18 136
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