Hierarchy in mid-rapidity fragmentation: mass, isospin, velocity correlations

Details Hierarchy in mid-rapidity fragmentation: mass, isospin, velocity correlations Hierarchy in mid-rapidity fragmentation: mass, isospin, velocity correlations

2010-08-30

arxiv.org/abs/1008.5097v2

Physics

Nuclear Physics

Nuclear Theory

7 pages, 9 figures

Scientific paper

We present new features of the transition from nuclear multifragmentation to neck fragmentation in semi-central heavy-ion collisions at Fermi energies as obtained within a microscopic transport model, Stochastic Mean Field (SMF). We show that along this transition specific hierarchy phenomena of some kinematic observables associated with the intermediate mass fragments develop. Their correlations with the dynamics of isospin degree of freedom, predicted by our calculations, open new possibilities to learn about the density dependence of nuclear symmetry energy below saturation, as well as about the fragmentation mechanisms. Detailed results are presented for mass symmetric Sn + Sn reactions with different isospin content at 50A MeV .

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