dorsal/arxiv
View SchemaReaction Dynamics with Exotic Beams
| Authors | V. Baran, M. Colonna, V. Greco, M. Di Toro |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0412060 |
| URL | https://arxiv.org/abs/nucl-th/0412060 |
| DOI | 10.1016/j.physrep.2004.12.004 |
| Journal | Phys.Rept.410:335-466,2005 |
Abstract
We review the new possibilities offered by the reaction dynamics of asymmetric heavy ion collisions, using stable and unstable beams. We show that it represents a rather unique tool to probe regions of highly Asymmetric Nuclear Matter ($ANM$) in compressed as well as dilute phases, and to test the in-medium isovector interaction for high momentum nucleons. The focus is on a detailed study of the symmetry term of the nuclear Equation of State ($EOS$) in regions far away from saturation conditions but always under laboratory controlled conditions. Thermodynamic properties of $ANM$ are surveyed starting from nonrelativistic and relativistic effective interactions. In the relativistic case the role of the isovector scalar $\delta$-meson is stressed. The qualitative new features of the liquid-gas phase transition, "diffusive" instability and isospin distillation, are discussed. The results of ab-initio simulations of n-rich, n-poor, heavy ion collisions, using stochastic isospin dependent transport equations, are analysed as a function of beam energy and centrality. The isospin dynamics plays an important role in all steps of the reaction, from prompt nucleon emissions to the final fragments. The isospin diffusion is also of large interest, due to the interplay of asymmetry and density gradients. In relativistic collisions, the possibility of a direct study of the covariant structure of the effective nucleon interaction is shown. Results are discussed for particle production, collective flows and iso-transparency. Perspectives of further developments of the field, in theory as well as in experiment, are presented.
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"abstract": "We review the new possibilities offered by the reaction dynamics of\nasymmetric heavy ion collisions, using stable and unstable beams. We show that\nit represents a rather unique tool to probe regions of highly Asymmetric\nNuclear Matter ($ANM$) in compressed as well as dilute phases, and to test the\nin-medium isovector interaction for high momentum nucleons. The focus is on a\ndetailed study of the symmetry term of the nuclear Equation of State ($EOS$) in\nregions far away from saturation conditions but always under laboratory\ncontrolled conditions.\n Thermodynamic properties of $ANM$ are surveyed starting from nonrelativistic\nand relativistic effective interactions. In the relativistic case the role of\nthe isovector scalar $\\delta$-meson is stressed. The qualitative new features\nof the liquid-gas phase transition, \"diffusive\" instability and isospin\ndistillation, are discussed. The results of ab-initio simulations of n-rich,\nn-poor, heavy ion collisions, using stochastic isospin dependent transport\nequations, are analysed as a function of beam energy and centrality. The\nisospin dynamics plays an important role in all steps of the reaction, from\nprompt nucleon emissions to the final fragments. The isospin diffusion is also\nof large interest, due to the interplay of asymmetry and density gradients. In\nrelativistic collisions, the possibility of a direct study of the covariant\nstructure of the effective nucleon interaction is shown. Results are discussed\nfor particle production, collective flows and iso-transparency.\n Perspectives of further developments of the field, in theory as well as in\nexperiment, are presented.",
"arxiv_id": "nucl-th/0412060",
"authors": [
"V. Baran",
"M. Colonna",
"V. Greco",
"M. Di Toro"
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"doi": "10.1016/j.physrep.2004.12.004",
"journal_ref": "Phys.Rept.410:335-466,2005",
"title": "Reaction Dynamics with Exotic Beams",
"url": "https://arxiv.org/abs/nucl-th/0412060"
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