http://dx.doi.org/10.1051/epjconf/20100208003
Nuclear dissipation effects on fission and evaporation in systems of intermediate fissility
P.N. Nadotchy1a, A. Brondi2, A. Di Nitto2, G. La Rana2, R. Moro2, E. Vardaci2, A. Ordine2, A. Boiano2, M. Cinausero3, G. Prete3, V. Rizzi3, N. Gelli4 and F. Lucarelli4
1 Istituto Nazionale di Fisica Nucleare, Via Cinthia, 80126 Napoli, Italy
2 Istituto Nazionale di Fisica Nucleare and Dipartimento di Scienze Fisiche, Universitá di Napoli “Federico II”, Via Cinthia, 80126 Napoli, Italy
3 Laboratori Nazionali di Legnaro dell’Istituto Nazionale di Fisica Nucleare, Legnaro (Padova), Italy
4 Istituto Nazionale di Fisica Nucleare and Dipartimento di Fisica, Firenze, Italy
a e-mail: nadtochy@na.infn.it
Published online: 09 March 2010
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.
© Owned by the authors, published by EDP Sciences, 2010