Production cross sections of superheavy nuclei based on dinuclear system model

被引：117
|
作者：
Feng, Zhao-Qing [1 ]
Jin, Gen-Ming
Fu, Fen
Li, Jun-Qing
机构：
[1] Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
NUCLEAR PHYSICS A | 2006年 / 771卷
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.nuclphysa.2006.03.002
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The barrier distribution function method is introduced in the dinuclear system model in the calculation of the transmission probability, which is the first stage in the synthesis of superheavy nuclei. Dynamical deformation and averaging collision orientations are considered in the calculation of the fusion probability by solving master equation numerically. Survival probability with respect to xn evaporation channel (x = 1-5) in the de-excitation process of the thermal compound nucleus is calculated, in which the level density of the Fermi-gas model is used. Production cross sections of a series of superheavy nuclei formed in the reactions taken magic and deformed nuclei as target in Ca-48 induced reactions are studied systematically. The calculated results are in good agreement with available experimental data. Isotopic dependence of the production cross sections in the reactions Ca-48 + Pu is analyzed. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：50 / 67
页数：18
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