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Titolo:
NONEQUILIBRIUM FLUID-DYNAMICS IN THE EARLY-STAGE OF ULTRARELATIVISTICHEAVY-ION COLLISIONS
Autore:
BRACHMANN J; DUMITRU A; MARUHN JA; STOCKER H; GREINER W; RISCHKE DH;
Indirizzi:
UNIV FRANKFURT,INST THEORET PHYS,POSTFACH 111932 D-60054 FRANKFURT GERMANY DUKE UNIV,DEPT PHYS DURHAM NC 27708
Titolo Testata:
Nuclear physics. A
fascicolo: 3-4, volume: 619, anno: 1997,
pagine: 391 - 412
SICI:
0375-9474(1997)619:3-4<391:NFITEO>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUCLEUS-NUCLEUS COLLISIONS; QUARK-GLUON PLASMA; 2-FLUID HYDRODYNAMIC MODEL; COLLECTIVE FLOW; RELATIVISTIC HYDRODYNAMICS; CORRECTED TRANSPORT; PHASE-TRANSITION; PARTICLE-PRODUCTION; PROJECTILE ENERGY; AU+AU COLLISIONS;
Keywords:
RELATIVISTIC MULTI-FLUID HYDRODYNAMICS; HEAVY ION COLLISION; NONEQUILIBRIUM; BARYON STOPPING; NUCLEON FLOW; SHOCK WAVES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
71
Recensione:
Indirizzi per estratti:
Citazione:
J. Brachmann et al., "NONEQUILIBRIUM FLUID-DYNAMICS IN THE EARLY-STAGE OF ULTRARELATIVISTICHEAVY-ION COLLISIONS", Nuclear physics. A, 619(3-4), 1997, pp. 391-412

Abstract

To describe ultrarelativistic heavy-ion collisions we construct a three-fluid hydrodynamical model. In contrast to one-fluid hydrodynamics,it accounts for the finite stopping power of nuclear matter, i.e. fornon-equilibrium effects in the early stage of the reaction. Within this model, we study baryon dynamics in the BNL-AGS energy range. For the system Au+Au we find that kinetic equilibrium between projectile andtarget nucleons is established only after a time t(cm)(cq) approximate to 5 fm/c similar or equal to 2R(Au)/(gamma cm). Observables that are sensitive to the early stage of the collision (like e.g. nucleon flow) therefore differ considerably from those calculated in the one-fluid model. (C) 1997 Elsevier Science B.V.

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Documento generato il 04/07/20 alle ore 12:20:55