1997/01/22 by J. Brachmann, A. Dumitru, C. Spieles +3
Physics and Astronomy · #nucl-th
published as GSI Scientific Report 1996 (ISSN 0174-0814) p.86 · to be published in GSI annual scientific report 1997, psfig style file needed
arxiv created 1997/01/22 · arxiv updated 2009/12/01
We study the time scale for pressure equilibration in heavy ion collisions at AGS energies within the three-fluid hydrodynamical model and a microscopic cascade model (UrQMD). We find that kinetic equilibrium is reached in both models after a time of 5 fm/c (center-of-mass time). Thus, observables which are sensitive to the early stage of the reaction differ considerably from the expectations within the instant thermalization scenario (one-fluid hydrodynamical model).