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

P.N. Nadotchy; A. Brondi; A. Di Nitto; G. La Rana; R. Moro; E. Vardaci; A. Ordine; A. Boiano; M. Cinausero; G. Prete; V. Rizzi; N. Gelli; F. Lucarelli

doi:10.1051/epjconf/20100208003

EPJ

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

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.

12 Internat. Congress of the Balkan Physical Union
July 8-12, 2025
Bucharest, Romania

EPJ

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

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