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 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.
| 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 |
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| URN: | urn:nbn:de:hebis:30-7046 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 14.04.2005 |
| Year of first Publication: | 1996 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| 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): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
