DOI: 10.1209/epl/i2003-00622-0
Europhys. Lett., 64 (6) , pp. 750-756 (2003)

Fusion probability in heavy-ion collisions by a dinuclear-system model

W. Li¹, N. Wang², J. F. Li¹, H. Xu¹, W. Zuo^{1, 2}, E. Zhao², J. Q. Li^{1, 2} and W. Scheid<sup>3

1</sup>  Institute of Modern Physics, The Chinese Academy of Sciences Lanzhou 730000, PRC
²  Institute of Theoretical Physics, The Chinese Academy of Sciences Beijing 100080, PRC
³  Institute for Theoretical Physics of Justus-Liebig-University 35392, Giessen, Germany

(Received 27 June 2003; accepted in final form 13 October 2003)

Abstract
In the dinuclear system formed in heavy-ion collisions the nucleon exchange between two touching nuclei is described by solving the Master Equation numerically since the driving force, which contains structure effects, is not linear with mass asymmetry in the diffusion process. The relative motion is treated to couple with the nucleon exchange. All channels of every mass combination between the projectile-like and the target-like may open, and a small fraction of mass distribution probability is found to contribute to the compound nuclear formation of a super heavy nucleus in the very strongly damped reaction process.

PACS
25.70.Jj - Fusion and fusion-fission reactions.
24.10.-i - Nuclear reaction models and methods.
24.60.-k - Statistical theory and fluctuations.

© EDP Sciences 2003