Isoscaling as a measure of Symmetry Energy in the Lattice Gas Model

Details Isoscaling as a measure of Symmetry Energy in the Lattice Gas Model Isoscaling as a measure of Symmetry Energy in the Lattice Gas Model

2008-09-12

arxiv.org/abs/0809.2163v1

Phys.Rev.Lett.102:142503,2009

Physics

Nuclear Physics

Nuclear Theory

4 pages, 3 figure, submitted to PRL

Scientific paper

10.1103/PhysRevLett.102.142503

The energetic properties of nuclear clusters inside a low-density, finite-temperature medium are studied with a Lattice Gas Model including isospin dependence and Coulomb forces. Important deviations are observed respect to the Fisher approximation of an ideal gas of non-interacting clusters, but the global energetics can still be approximately expressed in terms of a simple modified energy-density functional. The multi-fragmentation regime appears dominated by combinatorial effects in this model, but the isoscaling of the largest fragment in low energy collisions appears a promising observable for the experimental measurement of the symmetry energy.

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