A microscopic transport model for synthesis of superheavy nuclei

	A microscopic transport model for synthesis of superheavy nuclei
	Zhang, Feng-Shou 1,2; Feng, Zhao-Qing3,4 ; Jin, Gen-Ming 3,4; Ma, YG ; Ozawa, A
	2006
关键词	low and intermediate energy heavy-ion reactions fusion reactions shell model
卷号	865
页码	173-+
英文摘要	Isospin dependent molecular dynamics model has been used successfully for studying isospin effects of heavy ion collisions at intermediate energies. However, there are problems with this model for studying nuclear fusion at low energies near Coulomb barrier, such as unphysical nucleon emissions in the process of projectile and target approaching, lack of shell effect, etc. We improve the isospin dependent molecular dynamics model from various aspects for studying the dynamical process for synthesis of superheavy nuclei at low energies. The shell correction energy of the system is calculated by using deformed two-center shell model. The surface energy of the system is improved by introducing a switch function that combines the surface energies of projectile and target with the one of the compound nucleus, For reaction systems induced by of O-16 and C-40,C-48 at low energies near Coulomb barrier, it is found that the calculated fusion cross sections show a strong enhancement for the neutron-rich combinations, which can regenerate the experimental data quantitatively. For heavy systems such as Ca-48+Pb-208 and Ca-48+U-238, preliminary calculations show that the experimental capture cross sections can be reproduced quanlitively. This model could pave a way for realistic predication of cross sections for synthesis of superhavey nuclei for different projectile-target systems at low energies near Coulomb barrier in future experiments.
会议录	NUCLEAR PHYSICS TRENDS
会议录出版者	AMER INST PHYSICS
会议录出版地	2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
语种	英语
WOS研究方向	Physics
WOS记录号	WOS:000243246900027
内容类型	会议论文
源URL	[http://119.78.100.186/handle/113462/58598]
专题	中国科学院近代物理研究所
通讯作者	Zhang, Feng-Shou
作者单位	1.Beijing Normal Univ, Inst Low Energy Nucl Phys, Key Lab Beam Technol & Mat Modificat, Minist Educ, Beijing 100875, Peoples R China 2.Beijing Radiat Ctr, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Inst Mod Phys, Lanzhou 730000, Peoples R China 4.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Feng-Shou,Feng, Zhao-Qing,Jin, Gen-Ming,et al. A microscopic transport model for synthesis of superheavy nuclei[C]. 见:.