Eur. Phys. J. A (2010) 43: 67-71
https://doi.org/10.1140/epja/i2009-10889-y

Regular Article - Theoretical Physics

Effect of shell structure in the fusion reactions

¹ School of Science, Jiangnan University, 214122, Wuxi, Jiangsu, China
² The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, 100875, Beijing, China
³ National Laboratory of Heavy Ion Accelerator of Lanzhou, Center of Theoretical Nuclear Physics, 730000, Lanzhou, China

^* e-mail: baoanbian@163.com

Received: 26 July 2009
Revised: 19 September 2009
Accepted: 13 October 2009
Published online: 31 October 2009

Abstract

The fusion reactions are studied in the central collisions ⁸²Se$ + $¹³⁴Ba and ⁸²Se$ + $¹³⁸Ba by the improved isospin-dependent quantum molecular-dynamics model, where the nucleus ¹³⁸Ba has a closed neutron shell N = 82 . Comparing the shell correction energies and fusion probabilities of these two reactions with the ones of other asymmetric or more symmetric reaction systems that form the same compound nuclei, we find the dependence of the fusion reaction on the nuclear shell structure of the colliding nuclei. The experimental data of the fusion probabilities are described well by the present model. The result suggests that the neutron shell closure N = 82 promotes fusion.