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Author Mazurek, K. ♦ Schmitt, C. ♦ Wieleczko, J. P. ♦ Nadtochy, P. N. ♦ Ademard, G.
Source Hyper Articles en Ligne (HAL)
Content type Text
Publisher American Physical Society
File Format PDF
Language English
Subject Keyword phys ♦ Physics [physics]/Nuclear Theory [nucl-th]
Abstract The present work is dedicated to a careful investigation of the influence of the potential energy surface on the fission process. The time evolution of nuclei at high excitation energy and angular momentum is studied by means of three-dimensional Langevin calculations performed for two different parametrizations of the macroscopic potential: the Finite Range Liquid Drop Model (FRLDM) and the Lublin-Strasbourg Drop (LSD) prescription. Depending on the mass of the system, the topology of the potential throughout the deformation space of interest in fission is observed to noticeably differ within these two approaches, due to the treatment of curvature effects. When utilized in the dynamical calculation as the driving potential, the FRLDM and LSD models yield similar results in the heavy-mass region, whereas the predictions can be strongly dependent on the Potential Energy Surface (PES) for medium-mass nuclei. In particular, the mass, charge, and total kinetic energy distributions of the fission fragments are found to be narrower with the LSD prescription. The influence of critical model parameters on our findings is carefully investigated. The present study sheds light on the experimental conditions and signatures well suited for constraining the parametrization of the macroscopic potential. Its implication regarding the interpretation of available experimental data is briefly discussed.
ISSN 05562813
Educational Use Research
Learning Resource Type Article
Publisher Date 2011-01-01
e-ISSN 1089490X
Journal Physical Review C
Volume Number 84