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Session QB04 - Heavy Ions III: Energy Dissipation and Fragmentation.
ORAL session, Wednesday morning, March 24
Room 204E, GWCC

[QB04.06] Time Interval Distributions for Thermalized Particle Ejection: Dynamical and Statistical Description

C. J. Gelderloos, N. N. Ajitanand, J. M. Alexander, E. Bauge, A. Elmaani, T Ethvignot, R. A Lacey, R. Sun, P. Danielewicz, M. E. Brandon, A. Giorni, D. Heuer, S. Kox, A. Lleres, A. Menchaca-Rocha, F. Merchez, D. Rebreyend, J. B. Viano, B. Chambon, B. Cheynis, D. Drain, C. Pastor (Departments of Physics and Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794, USA Team)

Energy spectra and particle correlations are reported for ^2H - ^2H pairs from 17, 27, and 34 A MeV ^40Ar + Ag. The spectra at \theta \sim 90^\circ in the emitter frame are very similar to equilibrium model calculations, indicating extensive energy thermalization. However, the relative momentum correlations disagree with this model; they are much weaker than predicted, indicating the occurrence of much longer emission time intervals. If one includes the longer emission sequences predicted by dynamical model calculations, then one can achieve consistency with the data.

Part Q of program listing