Trajectory analysis for fusion path in superheavy-mass region

Details Trajectory analysis for fusion path in superheavy-mass region Trajectory analysis for fusion path in superheavy-mass region

2005-02-15

arxiv.org/abs/nucl-th/0502042v1

Nucl.Phys. A753 (2005) 152-173

Physics

Nuclear Physics

Nuclear Theory

25 pages, 12 figures, accepted for publication in Nuclear Physics A

Scientific paper

10.1016/j.nuclphysa.2005.02.122

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 $^{48}$Ca+$^{244}$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.

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