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Beyond mean-field approach to heavy-ion reactions around the Coulomb barrier

By Ayik Sakir, Lacroix Denis, Washiyama Kouhei and Yilmaz Bülent


Dissipation and fluctuations of one-body observables in heavy-ion reactions around the Coulomb barrier are investigated with a microscopic stochastic mean-field approach. By projecting the stochastic meanfield dynamics on a suitable collective path, transport coefficients associated with the relative distance between colliding nuclei and a fragment mass are extracted. Although microscopic mean-field approach is know to underestimate the variance of fragment mass distribution, the description of the variance is much improved by the stochastic mean-field method. While fluctuations are consistent with the empirical (semiclassical) analysis of the experimental data, concerning mean values of macroscopic variables the semiclassical description breaks down below the Coulomb barrier

Topics: Physics, QC1-999, Science, Q, DOAJ:Physics (General), DOAJ:Physics and Astronomy
Publisher: EDP Sciences
Year: 2011
DOI identifier: 10.1051/epjconf
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