Experimental balance energies and isospin-dependent nucleon-nucleon cross-sections

Details Experimental balance energies and isospin-dependent nucleon-nucleon cross-sections Experimental balance energies and isospin-dependent nucleon-nucleon cross-sections

2010-09-28

arxiv.org/abs/1009.5470v1

Phys.Rev.C82:024610,2010

Physics

Nuclear Physics

Nuclear Theory

15 pages, 9 figures

Scientific paper

10.1103/PhysRevC.82.024610

The effect of different isospin-dependent cross-section on directed flow is studied for variety of systems(for which experimental balance energies are available) using an isospin-dependent Quantum Molecular Dynamic (IQMD) model. We show that balance energies are sensitive towards isospin-dependent cross-sections for light systems, while nearly no effect exist for heavier nuclei. A reduced cross-section $\sigma = 0.9\sigma_{NN}$ with stiff equation of state is able to explain experimental balance energies in most of systems. A power law behaviour is also given for the mass dependence of balance energy, which also follow N/Z dependence.

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