Trajectory analysis for fusion path in superheavy-mass region

被引:39
作者
Aritomo, Y [1 ]
Ohta, M
机构
[1] JINR, Flerov Lab Nucl React, Dubna, Russia
[2] Konan Univ, Dept Phys, Kobe, Hyogo, Japan
关键词
superheavy elements; fluctuation-dissipation dynamics; fusion-fission process; quasi-fission process;
D O I
10.1016/j.nuclphysa.2005.02.122
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
We propose an effective method for the precise investigation of the fusion-fission mechanism in the superheavy-mass region, using the fluctuation-dissipation model. The trajectory calculation with friction is performed in the nuclear deformation space using the Langevin equation. In the reaction Ca-41 + (244)pu, the trajectories are classified into the fusion-fission process, the quasi-fission process and the deep quasi-fission process. By analyzing the time evolution of each trajectory, the mechanism of each process is clearly revealed, i.e., it is explained why a trajectory takes a characteristic path in this model. We discuss, in particular, the condition under which the fusion path is followed, which is crucial in the discussion of the possibility of synthesizing superheavy elements. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:152 / 173
页数:22
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