Trajectory analysis for fusion path in superheavy-mass region

Abstract

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.

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

References in corpus (1)

• Microscopic Enhancement of Heavy-Element Production

Cited by in corpus (7)

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• Analysis of fusion-fission dynamics by pre-scission neutron emission in ${}^{58}$Ni+${}^{208}$Pb
• Dynamical mechanism of fusion hindrance in heavy ion collisions
• Origin of the drastic decrease of fusion probability in superheavy mass region
• Pre-scission neutron multiplicity associated with the dynamical process in superheavy mass region