On the impossibility of temperature extraction from heavy ion induced particle spectra
- Spectra of various particle species have been calculated with the Quantum Molecular Dynamics (QMD) model for very central collisions of Au+Au. They are compatible with the idea of a fully stopped thermal source which exhibits a transversal expansion besides the thermal distribution of an ideal gas. How- ever, the microscopic analyses of the local flow velocities and temperatures indicate much lower temperatures at densities associated with the freeze-out. The results express the overall impossibility of a model-independent determi- nation of nuclear temperatures from heavy ion spectral data, also at other energies (e.g. CERN) or for other species (i.e. pions, kaons, hyperons)
| Verfasserangaben: | Jens Konopka, Horst StöckerORCiDGND, Walter GreinerGND |
|---|---|
| URN: | urn:nbn:de:hebis:30-24307 |
| Dokumentart: | Preprint |
| Sprache: | Englisch |
| Datum der Veröffentlichung (online): | 08.02.2006 |
| Jahr der Erstveröffentlichung: | 1995 |
| Veröffentlichende Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Datum der Freischaltung: | 08.02.2006 |
| Freies Schlagwort / Tag: | Kollisionen schwerer Ionen; Molekulare Dynamik; QMD; ideales Gas QMD; Quantum Molecular Dynamics; heavy ion collisions; ideal gas |
| Quelle: | Nucl.Phys.A583:357C-362C,1995 ; http://arxiv.org/abs/nucl-th/9505018 |
| HeBIS-PPN: | 184929067 |
| Institute: | Physik / Physik |
| DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Lizenz (Deutsch): |  Deutsches Urheberrecht |
