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题名: Dynamic study of fusion reactions for Ca-40,Ca-48+Zr-90,Zr-96 around the Coulomb barrier
作者: Wang, N ;  Wu, XZ ;  Li, ZX
刊名: PHYSICAL REVIEW C
出版日期: 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
学科分类: Physics
通讯作者: Wang, N , Inst Atom Energy, POB 275 18, Beijing 102413, Peoples R China.
部门归属: Inst Atom Energy, Beijing 102413, Peoples R China; Natl Lab Heavy Ion Accelerator, Ctr Nucl Theory, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000181377400019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13365
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Wang, N,Wu, XZ,Li, ZX. 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):-.
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