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)

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Author:Jens Konopka, Horst StöckerORCiDGND, Walter GreinerGND
Document Type:Preprint
Date of Publication (online):2006/02/08
Year of first Publication:1995
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/02/08
Tag:Kollisionen schwerer Ionen; Molekulare Dynamik; QMD; ideales Gas
QMD; Quantum Molecular Dynamics; heavy ion collisions; ideal gas
Source:Nucl.Phys.A583:357C-362C,1995 ; http://arxiv.org/abs/nucl-th/9505018
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht