Quantum molecular dynamics simulation of multifragment production in heavy ion collisions at [ital E]/[ital A]=600 MeV
- Gesellschaft fuer Schwerionenforschung, D-6100 Darmstadt (Germany) Laboratoire de Physique Nucleaire, F-44072 Nantes (France) Institut fuer Kernphysik, Universitaet Frankfurt, D-6000 Frankfurt (Germany) Centre de Recherches Nucleaires, F-67037 Strasbourg (France) Laboratoire National Saturne, CEN Saclay, F-91191 Gif-sur-Yvette (France) INFN, Dipartimento di Fisica dell'Universita, I-95129 Catania (Italy) INFN, Istituto di Scienze Fisiche, Universita degli Studi di Milano, I-20133 Milano (Italy) Forschungszentrum Rossendorf, O-8051 Dresden (Germany)
With the ALADIN forward spectrometer the fragmentation of gold nuclei at 600 MeV per nucleon after interaction with carbon, aluminum, copper, and lead targets has been investigated. The results are compared to quantum-molecular-dynamics (QMD) calculations using soft and hard equations of state as well as a soft equation of state with momentum-dependent forces. Whereas the QMD has been successfully applied to heavy ion collisions at lower energies, it is not possible to reproduce the fragment distributions and the light-particle multiplicities observed in this experiment at relativistic energies. To study the reasons for the discrepancy between the experimental data and the simulations we investigated the time evolution of the nuclear system after a collision and the disintegration pattern of excited nuclei in the QMD approach.
- OSTI ID:
- 6215358
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Vol. 48:2; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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