Nuclear dissipation effects on fission and evaporation in systems of intermediate fissility

• Main Authors: Gelli N., Lucarelli F., Cinausero M., Prete G., Rizzi V., Vardaci E., Ordine A., Boiano A., Di Nitto A., La Rana G., Moro R., Nadotchy P.N., Brondi A.
• Format: Article
• Language: English
• Published: EDP Sciences 2010-03-01
• Series: EPJ Web of Conferences
• Online Access: http://dx.doi.org/10.1051/epjconf/20100208003

The systems of intermediate fissility 132Ce and 158Er have been studied experimentally and theoretically in order to investigate the dissipation properties of nuclear matter. Cross sections of fusion-fission and evaporation residues channels together with charged particles multiplicities in both channels, their spectra, angular correlations and mass-energy distribution of fission fragments have been measured. Theoretical analysis has been performed using multi-dimensional stochastic approach with realistic treatment of particle evaporation. The results of analysis show that full one-body or unusually strong two-body dissipation allows to reproduce experimental data. No temperature dependent dissipation was needed.