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

Abstract : 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 mean- field 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 un- derestimate 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.
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Contributor : Michel Lion Connect in order to contact the contributor
Submitted on : Thursday, September 29, 2011 - 8:58:51 AM
Last modification on : Thursday, November 5, 2020 - 10:50:13 AM

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K. Washiyama, Denis Lacroix, S. Ayik, B. Yilmaz. Beyond mean-field approach to heavy-ion reactions around the Coulomb barrier. 5th International Conference FUSION11, May 2011, Saint Malo, France. pp.09003, ⟨10.1051/epjconf/20111709003⟩. ⟨in2p3-00590824⟩



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