New isospin effects in central heavy-ion collisions at Fermi energies

Abstract : Isospin e ffects on multifragmentation properties were studied thanks to nuclear collisions between di fferent isotopes of xenon beams and tin targets. It is shown that, in central collisions leading to multifragmentation, the mean number of fragments and their mean kinetic energy increase with the neutron-richness of the total system. Comparisons with a stochastic transport model allow to attribute the multiplicity increase to the multifragmentation stage, before secondary decay. The total charge bound in fragments is proposed as an alternate variable to quantify preequilibrium emission and to investigate symmetry energy e ffects.
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Physical Review C, American Physical Society, 2012, 86, pp.044617. <10.1103/PhysRevC.86.044617>


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Submitted on : Friday, September 28, 2012 - 10:00:29 AM
Last modification on : Tuesday, October 28, 2014 - 6:00:49 PM

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F. Gagnon-Moisan, E. Galichet, M.-F. Rivet, B. Borderie, M. Colonna, et al.. New isospin effects in central heavy-ion collisions at Fermi energies. Physical Review C, American Physical Society, 2012, 86, pp.044617. <10.1103/PhysRevC.86.044617>. <in2p3-00736381>

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