Effects of N/Z on survival probability of heavy nuclei

• Published in: Chinese physics C Vol. 32; no. 1; pp. 49 - 51
• Main Author: 叶巍 杨宏伟
• Format: Journal Article
• Language: English
• Published: IOP Publishing 2008; Department of Physics, Southeast University, Nanjing 210096, China
• Subjects: 多样性; 方程式; 核技术; 计算方法; N/Z effect; pre-saddle particle multiplicity; survival probability; Langevin equation
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/32/1/011

The excitation functions of the evaporation residue formation probability of three heavy nuclei ^194pb, ^200Pb and ^206pb are calculated by using a Langevin equation coupled with a statistical decay model. The results show that the neutron-to-proton ratio （N/Z） of a compound nucleus has an effect on survival probability and this effect becomes larger with increasing N/Z. This is because the fission barrier and the pre-saddle particle emission depend on the N/Z ratio of the system.