The system of intermediate fissility Ce-132 has been studied experimentally and theoretically to investigate the dissipation properties of nuclear matter. Cross sections of fusion-fission and evaporation-residue channels together with light charged particle multiplicities in both channels, their spectra, light charged particle-evaporation residue angular correlations, and mass-energy distribution of fission fragments have been measured. Theoretical analysis has been performed using a multidimensional stochastic approach coupled with a Hauser-Feshbach treatment of particle evaporation. The main conclusions are that the full one-body shape-dependent dissipation mechanism allows the reproduction of the full set of experimental data and that after a time tau(d) = 5 x 10(-21) s from the equilibrium configuration of the compound nucleus, fission decay can occur in a time that can span several orders of magnitude.
Fission dynamics of intermediate-fissility systems: A study within a stochastic three-dimensional approach / Vardaci, E., Nadtochy, P.N., DI NITTO, A., Brondi, A., LA RANA, G., Moro, R.E.M., Rath, P.K., Ashaduzzaman, M.d., Kozulin, E.M., Knyazheva, G.N., Itkis, I.M., Cinausero, M., Prete, G., Fabris, D., Montagnoli, G., Gelli, N.. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 92:3(2015). [10.1103/PhysRevC.92.034610]
Fission dynamics of intermediate-fissility systems: A study within a stochastic three-dimensional approach
VARDACI, EMANUELE
;DI NITTO, antonio;BRONDI, AUGUSTO;LA RANA, GIOVANNI;MORO, RENATA EMILIA MARIA;RATH, PRASANTA KUMAR;ASHADUZZAMAN, MD;
2015
Abstract
The system of intermediate fissility Ce-132 has been studied experimentally and theoretically to investigate the dissipation properties of nuclear matter. Cross sections of fusion-fission and evaporation-residue channels together with light charged particle multiplicities in both channels, their spectra, light charged particle-evaporation residue angular correlations, and mass-energy distribution of fission fragments have been measured. Theoretical analysis has been performed using a multidimensional stochastic approach coupled with a Hauser-Feshbach treatment of particle evaporation. The main conclusions are that the full one-body shape-dependent dissipation mechanism allows the reproduction of the full set of experimental data and that after a time tau(d) = 5 x 10(-21) s from the equilibrium configuration of the compound nucleus, fission decay can occur in a time that can span several orders of magnitude.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
