Tracing the evolution of the symmetry energy of hot nuclear fragments from the compound nucleus towards multifragmentation

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dc.creatorSouliotis, G. A.
dc.creatorBotvina, A. S.
dc.creatorShetty, D. V.
dc.creatorKeksis, A. L.
dc.creatorJandel, M.
dc.creatorVeselsky, M.
dc.creatorYennello, S. J.
dc.date2006-03-03
dc.date2006-11-19
dc.date.accessioned2026-07-07T10:30:34Z
dc.date.available2026-07-07T10:30:34Z
dc.descriptionThe evolution of the symmetry energy coefficient of the binding energy of hot fragments with increasing excitation is explored in multifragmentation processes following heavy-ion collisions below the Fermi energy. In this work, high-resolution mass spectrometric data on isotopic distributions of projectile-like fragments from collisions of 25 MeV/nucleon 86Kr and 64Ni beams on heavy neutron-rich targets are systematically compared to calculations involving the Statistical Multifragmentation Model. The study reveals a gradual decrease of the symmetry energy coefficient from 25 MeV at the compound nucleus regime (E*/A < 2 MeV) towards 15 MeV in the bulk multifragmentation regime (E*/A > 4 MeV). The ensuing isotopic distributions of the hot fragments are found to be very wide and extend towards the neutron drip-line. These findings may have important implications to the composition and evolution of hot astrophysical environments, such as core-collapse supernova.
dc.description5 pages, 4 figures, submitted to Phys. Rev. C
dc.identifierhttps://arxiv.org/abs/nucl-ex/0603006
dc.identifierhttp://arxiv.org/abs/nucl-ex/0603006
dc.identifierPhys.Rev.C75:011601,2007
dc.identifierdoi:10.1103/PhysRevC.75.011601
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178168
dc.subjectNuclear Experiment
dc.titleTracing the evolution of the symmetry energy of hot nuclear fragments from the compound nucleus towards multifragmentation
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