One-body energy dissipation in fusion reactions from mean-field theory

Kouhei Washiyama, Denis Lacroix, and Sakir Ayik
Phys. Rev. C 79, 024609 – Published 18 February 2009

Abstract

Information on dissipation in the entrance channel of heavy-ion collisions is extracted by the macroscopic reduction procedure of time-dependent Hartree-Fock theory. The method gives access to a fully microscopic description of the friction coefficient associated with the transfer of energy from the relative motion toward intrinsic degrees of freedom. The reduced friction coefficient exhibits a universal behavior, i.e., almost independent of systems investigated, whose order of magnitude is comparable with the calculations based on linear response theory. Similarly to nucleus-nucleus potential, especially close to the Coulomb barrier, there are sizable dynamical effects on the magnitude and form factor of the friction coefficient.

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  • Received 25 November 2008

DOI:https://doi.org/10.1103/PhysRevC.79.024609

©2009 American Physical Society

Authors & Affiliations

Kouhei Washiyama1, Denis Lacroix1, and Sakir Ayik2

  • 1GANIL, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
  • 2Physics Department, Tennessee Technological University, Cookeville, Tennessee 38505, USA

See Also

Energy dependence of the nucleus-nucleus potential close to the Coulomb barrier

Kouhei Washiyama and Denis Lacroix
Phys. Rev. C 78, 024610 (2008)

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Vol. 79, Iss. 2 — February 2009

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