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

Free access article

Issue		EPJ Web of Conferences Volume 2, 2010 CNR*09 - Second International Workshop on Compound Nuclear Reactions and Related Topics


Article Number		08003
Number of page(s)		4
Section		Fission Modelling
DOI		10.1051/epjconf/20100208003
Published online		09 March 2010

EPJ Web of Conferences 2, 08003 (2010)

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

P.N. Nadotchy¹^a, 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

Abstract

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.

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