Fission Hindrance in hot 216Th: Evaporation Residue Measurements

Abstract

The fusion evaporation-residue cross section for 32S+184W has been measured at beam energies of E_beam = 165, 174, 185, 196, 205, 215, 225, 236, 246,and 257 MeV using the ATLAS Fragment Mass Analyzer. The data are compared with Statistical Model calculations and it is found that a nuclear dissipation strength, which increases with excitation energy, is required to reproduce the excitation function. A comparison with previously published data show that the dissipation strength depends strongly on the shell structure of the nuclear system.

15 pages 9 figures

References in corpus (2)

• A Dynmical study of Fission Process and estimation of Prescission Neutron Multiplicity
• The excitation of a quantum gas of independent particles under periodic perturbation in integrable or non-integrable potential

Cited by in corpus (10)

• A systematic description of evaporation spectra for light and heavy compound nuclei
• Unified description of fission in fusion and spallation reactions
• Competition between fusion-fission and quasifission processes in the ${}^{32}$S+${}^{182,184}$W reactions
• A critical analysis of the modelling of dissipation in fission
• Evaporation residue cross-sections as a probe for nuclear dissipation in the fission channel of a hot rotating nucleus
• Nuclear fission: The "onset of dissipation" from a microscopic point of view
• Fission barrier, damping of shell correction and neutron emission in the fission of A$\sim$200
• Manifestation of transient effects in fission induced by relativistic heavy-ion collisions
• Experimental evidence of the effect of nuclear shells on fission dissipation and time
• Investigating the fission dynamics of the following neutron shell closed nuclei within a stochastic dynamical approach: 210Po, 212Rn, and 213Fr