Pre-scission neutron multiplicity associated with the dynamical process in superheavy mass region

Abstract

The fusion-fission process accompanied by neutron emission is studied in the superheavy-mass region on the basis of the fluctuation-dissipation model combined with a statistical model. The calculation of the trajectory or the shape evolution in the deformation space of the nucleus with neutron emission is performed. Each process (quasi-fission, fusion-fission, and deep quasi-fission processes) has a characteristic travelling time from the point of contact of colliding nuclei to the scission point. These dynamical aspects of the whole process are discussed in terms of the pre-scission neutron multiplicity, which depends on the time spent on each process. We have presented the details of the characteristics of our model calculation in the reactions ${}^{48}$Ca+${}^{208}$Pb and ${}^{48}$Ca+${}^{244}$Pu, and shown how the structure of the distribution of pre-scission neutron multiplicity depends on the incident energy.

arXiv comment19 pages, 12 figures, Accepted for publication in J. Phys. G

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• Pre-scission neutron multiplicity associated with the dynamical process in superheavy mass region

Cited by in corpus (2)

• Dissipative dynamics in quasi-fission
• Pre-scission neutron multiplicity associated with the dynamical process in superheavy mass region