Collective flow in heavy ion reactions and the properties of excited nuclear matter

Quantum Molecular Dynamics (QMD) calculations of central collisions between heavy nuclei are used to study fragment production and the creation of collective flow. It is shown that the final phase space distributions are
Quantum Molecular Dynamics (QMD) calculations of central collisions between heavy nuclei are used to study fragment production and the creation of collective flow. It is shown that the final phase space distributions are compatible with the expectations from a thermally equilibrated source, which in addition exhibits a collective transverse expansion. However, the microscopic analyses of the transient states in the intermediate reaction stages show that the event shapes are more complex and that equilibrium is reached only in very special cases but not in event samples which cover a wide range of impact parameters as it is the case in experiments. The basic features of a new molecular dynamics model (UQMD) for heavy ion collisions from the Fermi energy regime up to the highest presently available energies are outlined.
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Metadaten
Author:Jens Konopka, Steffen A. Bass, Marcus Bleicher, Mathias Brandstetter, Christoph Ernst, Lars Gerland, Walter Greiner, Sven Soff, Christian Spieles, Horst Stöcker, Henning Weber, L. A. Winckelmann
URN:urn:nbn:de:hebis:30-7046
Document Type:Preprint
Language:English
Date of Publication (online):2005/04/14
Year of first Publication:1996
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/04/14
Source:http://de.arxiv.org/abs/nucl-th/9607015 , Invited talk given by H. Stoecker, to appear in the proceedings of the 1st Catania Relativistic Ion Studies (CRIS '96), Catania (Italy), May 27-31 1996
HeBIS PPN:12878752X
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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