dorsal/arxiv
View SchemaDetermination of the stiffness of the nuclear symmetry energy from isospin diffusion
| Authors | Lie-Wen Chen, Che Ming Ko, Bao-An Li |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0407032 |
| URL | https://arxiv.org/abs/nucl-th/0407032 |
| DOI | 10.1103/PhysRevLett.94.032701 |
| Journal | Phys.Rev.Lett.94:032701,2005 |
Abstract
With an isospin- and momentum-dependent transport model, we find that the degree of isospin diffusion in heavy ion collisions at intermediate energies is affected by both the stiffness of the nuclear symmetry energy and the momentum dependence of the nucleon potential. Using a momentum dependence derived from the Gogny effective interaction, recent experimental data from NSCL/MSU on isospin diffusion are shown to be consistent with a nuclear symmetry energy given by $E_{\text{sym}}(\rho)\approx 31.6(\rho /\rho_{0})^{1.05} $ at subnormal densities. This leads to a significantly constrained value of about -550 MeV for the isospin-dependent part of the isobaric incompressibility of isospin asymmetric nuclear matter.
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"abstract": "With an isospin- and momentum-dependent transport model, we find that the\ndegree of isospin diffusion in heavy ion collisions at intermediate energies is\naffected by both the stiffness of the nuclear symmetry energy and the momentum\ndependence of the nucleon potential. Using a momentum dependence derived from\nthe Gogny effective interaction, recent experimental data from NSCL/MSU on\nisospin diffusion are shown to be consistent with a nuclear symmetry energy\ngiven by $E_{\\text{sym}}(\\rho)\\approx 31.6(\\rho /\\rho_{0})^{1.05} $ at\nsubnormal densities. This leads to a significantly constrained value of about\n-550 MeV for the isospin-dependent part of the isobaric incompressibility of\nisospin asymmetric nuclear matter.",
"arxiv_id": "nucl-th/0407032",
"authors": [
"Lie-Wen Chen",
"Che Ming Ko",
"Bao-An Li"
],
"categories": [
"nucl-th",
"astro-ph",
"nucl-ex"
],
"doi": "10.1103/PhysRevLett.94.032701",
"journal_ref": "Phys.Rev.Lett.94:032701,2005",
"title": "Determination of the stiffness of the nuclear symmetry energy from isospin diffusion",
"url": "https://arxiv.org/abs/nucl-th/0407032"
},
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