Fission Dynamics: The Quest of a Temperature Dependent Nuclear Viscosity

  • E. Vardaci Dipartimento di Fisica, Università degli Studi di Napoli “Federico II”, and Istituto Nazionale di Fisica Nucleare, Napoli, 80126, Italy
  • A. Di Nitto Johannes Gutenberg- Universität Mainz Institut für Kernchemie, Mainz, Germany
  • P.N. Nadtochy Omsk State University, Mira prospekt 55-A, Omsk 644077, Russia
  • A. Brondi Dipartimento di Fisica, Università degli Studi di Napoli “Federico II”, and Istituto Nazionale di Fisica Nucleare, Napoli, 80126, Italy
  • G. La Rana Dipartimento di Fisica, Università degli Studi di Napoli “Federico II”, and Istituto Nazionale di Fisica Nucleare, Napoli, 80126, Italy
  • R. Moro Dipartimento di Fisica, Università degli Studi di Napoli “Federico II”, and Istituto Nazionale di Fisica Nucleare, Napoli, 80126, Italy
  • M. Cinausero Laboratori Nazionali di Legnaro dell’Istituto Nazionale di Fisica Nucleare, Legnaro (Padova), 35020, Italy
  • G Prete Laboratori Nazionali di Legnaro dell’Istituto Nazionale di Fisica Nucleare, Legnaro (Padova), 35020, Italy
  • N. Gelli Istituto Nazionale di Fisica Nucleare, Sesto Fiorentino (Firenze), 50019, Italy
  • E. M.Kozulin Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow Region, Russia
  • G.N. Knyazheva Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, RU-141980 Dubna, Moscow Region, Russia
Keywords: fission dynamics, nuclear viscosity, dynamical models, intermediate fissility systems, charged particle multiplicities

Abstract

This paper presents a journey within some open questions about the current use of a temperature dependent nuclear viscosity in models of nuclear fission and proposes an alternative experimental approach by using systems of intermediate fissility. This study is particularly relevant because: i) systems of intermediate fissility offer a suitable frame-work since the intervals between the compound nucleus and scission point temperatures with increasing excitation energy are much smaller than in the case of heavier systems, ii) the dependence of viscosity on the temperature may change with the fissility of the composite system; iii) the opportunity to measure also observables in the evaporation residues channel translates into a larger set of effective constraints for the models.

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How to Cite
E. Vardaci, A. Di Nitto, P.N. Nadtochy, A. Brondi, G. La Rana, R. Moro, M. Cinausero, G Prete, N. Gelli, E. M.Kozulin, & G.N. Knyazheva. (1). Fission Dynamics: The Quest of a Temperature Dependent Nuclear Viscosity. Journal of Nuclear Physics, Material Sciences, Radiation and Applications, 1(1), 1-11. https://doi.org/10.15415/jnp.2013.11001
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