Isotopic dependence of the evaporation residue cross section in the synthesis of superheavy nuclei

被引：18
作者：
Liu, Z. H. [1 ]
Bao, Jing-Dong
机构：
[1] Beijing Normal Univ, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China
[2] Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China
[3] China Inst Atom Energy, Beijing 102413, Peoples R China
来源：
PHYSICAL REVIEW C | 2007年 / 76卷 / 03期
关键词：
FUSION; SYSTEMATICS; MECHANISM;
D O I：
10.1103/PhysRevC.76.034604
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 formation of superheavy nuclei via hot fusion reactions Ca-48+Ra-A and Ca-48+Th-A is systematically studied within the diffusion model. The effect of the isotopic composition of actinide target on the production cross section is analyzed in detail. The results show that, as a general trend, the evaporation residue cross section exponentially depends on the difference of the effective fission barrier hight and neutron separation energy in units of the temperature. By means of this exponential relationship, the possible optimal isotopic composition of the colliding nuclei can be easily figured out before the experiment.
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页数：6
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