Pre-scission neutron multiplicity associated with the dynamical process in the superheavy-mass region
| Autor: | Masahisa Ohta, Yoshihiro Aritomo, F. Hanappe |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Physics
Nuclear and High Energy Physics Nuclear Theory Basis (linear algebra) Neutron emission FOS: Physical sciences Space (mathematics) Nuclear Theory (nucl-th) Nuclear physics medicine.anatomical_structure Distribution (mathematics) Scientific method medicine Deformation (engineering) Nuclear Experiment Nucleus Bond cleavage |
| Zdroj: | Journal of Physics G: Nuclear and Particle Physics. 32:2245-2259 |
| ISSN: | 1361-6471 0954-3899 |
| DOI: | 10.1088/0954-3899/32/11/016 |
| Popis: | 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. 19 pages, 12 figures, Accepted for publication in J. Phys. G |
| Databáze: | OpenAIRE |
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