The Evolution of Nuclear Multifragmentation in the Temperature-Density Plane

Details The Evolution of Nuclear Multifragmentation in the Temperature-Density Plane The Evolution of Nuclear Multifragmentation in the Temperature-Density Plane

1996-10-25

arxiv.org/abs/nucl-ex/9610008v1

Physics

Nuclear Physics

Nuclear Experiment

Scientific paper

The mean transverse kinetic energies of the fragments formed in the interaction of 1 A GeV Au+C have been determined. An energy balance argument indicates the presence of a collective energy which increases in magnitude with increasing multiplicity and accounts for nearly half of the measured mean transverse kinetic energy. The radial flow velocity associated with the collective energy yields estimates for the time required to expand to the freeze-out volume. Isentropic trajectories in the temperature-density plane are shown for the expansion and indicate that the system goes through the critical region at the same multiplicities as deduced from a statistical analysis. Here, the expansion time is approximately 70 fm/c.

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