Dependence of flow observables in heavy-ion collisions on the symmetry energy and the in-medium nucleon-nucleon interaction

被引：1

作者：

Cozma, M. D. ^{[1
]}

Petrovici, M. ^{[1
]}

机构：

[1] NIPNE, Magurele 077125, Romania

来源：

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 62, NO 2 | 2009年 / 62卷 / 02期

关键词：

Equation of state of nuclear matter; Elliptic flow; In-medium nucleon-nucleon interaction; Heavy-ion collisions; MICROSCOPIC CALCULATION; ISOSPIN-DEPENDENCE; DYNAMICS; EQUATION; PHYSICS;

D O I：

10.1016/j.ppnp.2008.12.011

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We employ a QMD transport model to study the influence of the isospin dependent part of the nuclear matter equation of state on the dynamics of heavy-ion collisions at intermediate energies. Parametrization of the in-medium dependence of the nucleon-nucleon elastic cross-sections, as predicted by microscopical models, are used. The sensitivity of flow observables to various parametrizations of the isospin dependent part of the equation of state (symmetry energy) is studied. The experimentally observed splitting of the elliptic flow values in Ru + Zr and Zr + Ru at incident energies of 400 MeV is shown to be due to, to an equal extent, density dependence of the microscopic nucleon-nucleon cross-section and symmetry energy. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：419 / 424

页数：6

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