We have started a research program at LNL with the apparatus 8πLP aimed at studying the fission dynamics in systems of intermediate fissility using light charged particles as probes. These systems are characterized by an evaporation residues (ER) cross section comparable or larger than the fission cross section, and by a relatively higher probability for charged particle emission in the pre-scission channel. In a theoretical framework in which time scale estimates rely on statistical model calculations, the additional analysis of particle emission in the ER channel allows more constraints on the input parameters of statistical and dynamical models. The contribution will offer an overall view of the systems studied so far and will provide new clues for interesting and contradictory physical cases. In particular the analysis of the systems 32S+100Mo at ELab =200MeV and 18O+150Sm at ELab =122MeV will be discussed. Recent advancement will be briefly discussed on the interplay between the fission and the evaporation residues channels as implied by a dynamical (Langevin) approach to the description of the fission process.
New Clues on Fission Dynamics from Systems of Intermediate Fissility / Vardaci, Emanuele; Brondi, Augusto; Di Nitto, A.; Guadagnuolo, D.; Fiorillo, V.; LA RANA, Giovanni; Moro, RENATA EMILIA MARIA; Trotta, M.; Ordine, A.; Boiano, A.; Cinausero, M.; Fioretto, E.; Prete, G.; Rizzi, V.; Gelli, N.; Lucarelli, F.; Nadtochy, P. N.; Rubchenya, V. A.. - STAMPA. - (2006), pp. 193-202. (Intervento presentato al convegno 22nd Winter Workshop on Nuclear Dynamics tenutosi a La Jolla, Ca, USA nel Marzo 11-18, 2006).
New Clues on Fission Dynamics from Systems of Intermediate Fissility
VARDACI, EMANUELE;BRONDI, AUGUSTO;A. Di Nitto;LA RANA, GIOVANNI;MORO, RENATA EMILIA MARIA;
2006
Abstract
We have started a research program at LNL with the apparatus 8πLP aimed at studying the fission dynamics in systems of intermediate fissility using light charged particles as probes. These systems are characterized by an evaporation residues (ER) cross section comparable or larger than the fission cross section, and by a relatively higher probability for charged particle emission in the pre-scission channel. In a theoretical framework in which time scale estimates rely on statistical model calculations, the additional analysis of particle emission in the ER channel allows more constraints on the input parameters of statistical and dynamical models. The contribution will offer an overall view of the systems studied so far and will provide new clues for interesting and contradictory physical cases. In particular the analysis of the systems 32S+100Mo at ELab =200MeV and 18O+150Sm at ELab =122MeV will be discussed. Recent advancement will be briefly discussed on the interplay between the fission and the evaporation residues channels as implied by a dynamical (Langevin) approach to the description of the fission process.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
