Equilibration and Phase Transition in Spectator Reactions

Authors: W. Trautmann for the ALADIN collaboration
Published: Proceedings of the 7th International Conference on Clustering Aspects of Nuclear Structure and Dynamics (CLUSTER 99) 14-19 Jun2 1999, Rab, Croatia
    edited by M. Korolija, Z. Basrak, and R. Caplar, World Scientific, Singapore (2000), p.350
Abstract: New results are reported from two recent experiments with the ALADIN spectrometer at SIS in which spectator decays following 197Au on 197Au collisions at bombarding energies up to 1 GeV per nucleon were studied. The evidence, obtained from these data, for the existence of an equilibrated breakup-state at low density is discussed. Particular attention is given to the kinetic degrees of freedom, and it is suggested that the slope temperatures derived from the fragment energy spectra may reflect the Fermi motion within the equilibrated spectator system prior to its decay.
Paper: Postscript 9 pages with 5 embedded figures
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