Abstract:
Vaporized sources produced in collisions between 36Ar and 58Ni at 95 MeV per nucleon have been detected with the multidetector INDRA. Complete information concerning the deexcitation properties of quasi-projectiles, including second moments of chemical composition, is compared to a quantum statistical model describing a gas of fermions and bosons in thermal and chemical equilibrium. Inclusions in the calculation of all known discrete levels of nuclear species which deexcite into light particles and of a final state excluded volume interaction are found decisive to very well reproduce the experimental data, which strongly supports that thermodynamical equilibrium was achieved at freeze-out for such sources.
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Received: 6 April 1999
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The INDRA Collaboration., Borderie, B., Gulminelli, F. et al. Thermal and chemical equilibrium for vaporizing sources . EPJ A 6, 197–202 (1999). https://doi.org/10.1007/s100500050334
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DOI: https://doi.org/10.1007/s100500050334