Dynamic study of fusion reactions for Ca-40,Ca-48+Zr-90,Zr-96 around the Coulomb barrier

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	Dynamic study of fusion reactions for Ca-40,Ca-48+Zr-90,Zr-96 around the Coulomb barrier
	Wang, N; Wu, XZ; Li, ZX; Wang, N , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
刊名	PHYSICAL REVIEW C
	2003
卷号	67 期号:2 页码:-
关键词	Quantum Molecular-dynamics Heavy-ion Collisions Drip-line Nuclei Subbarrier Fusion Fragment Formation Spherical Nuclei State Model
ISSN号	0556-2813
英文摘要	By using the updated improved quantum molecular dynamics model in which a surface-symmetry potential term has been introduced, the excitation functions for fusion reactions of Ca-40,Ca-48+Zr-90,Zr-96 at energies around the Coulomb barrier have been studied. The experimental data of the fusion cross sections for Ca-40+Zr-90,Zr-96 have been reproduced remarkably well without introducing any new parameters. The fusion cross sections for the neutron-rich fusion reactions of Ca-48+Zr-90,Zr-96 around the Coulomb barrier are predicted to be enhanced compared with a non-neutron-rich fusion reaction. In order to clarify the mechanism of the enhancement of the fusion cross sections for neutron-rich nuclear fusions, we pay great attention to studying the dynamic lowering of the Coulomb barrier during a neck formation. The isospin effect on the barrier lowering is investigated. It is interesting that the effect of the projectile and target nuclear structure on fusion dynamics can be revealed to a certain extent in our approach. The time evolution of the N/Z ratio at the neck region has been firstly illustrated. A large enhancement of the N/Z ratio at neck region for neutron-rich nuclear fusion reactions is found.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000181377400019
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13365]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Wang, N , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
推荐引用方式 GB/T 7714	Wang, N,Wu, XZ,Li, ZX,et al. Dynamic study of fusion reactions for Ca-40,Ca-48+Zr-90,Zr-96 around the Coulomb barrier[J]. PHYSICAL REVIEW C,2003,67(2):-.
APA	Wang, N,Wu, XZ,Li, ZX,&Wang, N , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China..(2003).Dynamic study of fusion reactions for Ca-40,Ca-48+Zr-90,Zr-96 around the Coulomb barrier.PHYSICAL REVIEW C,67(2),-.
MLA	Wang, N,et al."Dynamic study of fusion reactions for Ca-40,Ca-48+Zr-90,Zr-96 around the Coulomb barrier".PHYSICAL REVIEW C 67.2(2003):-.