Multifragmentation of the remnant produced in the reaction of [Formula Presented] GeV gold with carbon

J. A. Hauger, P. Warren, S. Albergo, F. Bieser, F. P. Brady, Z. Caccia, D. A. Cebra, A. D. Chacon, J. L. Chance, Y. Choi, S. Costa, J. B. Elliott, M. L. Gilkes, A. S. Hirsch, E. L. Hjort, A. Insolia, M. Justice, D. Keane, J. C. Kintner, V. LindenstruthM. A. Lisa, H. S. Matis, M. McMahan, C. McParland, W. F.J. Müller, D. L. Olson, M. D. Partlan, N. T. Porile, R. Potenza, G. Rai, J. Rasmussen, H. G. Ritter, J. Romanski, J. L. Romero, G. V. Russo, H. Sann, R. P. Scharenberg, A. Scott, Y. Shao, B. K. Srivastava, T. J.M. Symons, M. Tincknell, C. Tuvé, S. Wang, H. H. Wieman, T. Wienold, K. Wolf

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103 Scopus citations


A high-statistics exclusive study of the multifragmentation of [Formula Presented] GeV gold on carbon has been performed. Particles with [Formula Presented] show evidence of emission in a first prompt stage as well as in a second equilibrium stage whereas fragments with [Formula Presented] appear to be emitted essentially only in the second stage. Two methods for the separation of the [Formula Presented] particles into the two stages are given and they are in agreement. The yields for each stage are determined as a function of the event charged particle multiplicity [Formula Presented]. The mass, nuclear charge, excitation energy per nucleon, and temperature of the remnant left after the first stage and their fluctuations have been determined as a function of [Formula Presented]. The expansion of the remnant to fragment freeze-out is examined. The freeze-out temperature is determined from double isotope ratios as a function of [Formula Presented] and isentropic trajectories are obtained in the temperature-density plane. The caloric curve shows a monotonic increase with excitation energy. Some of the energy is in the form of radial flow. Overall, the results are consistent with a previous statistical analysis of the data which suggests that, over a certain range of excitation energies, multifragmentation involves a continuous phase transition.

Original languageEnglish (US)
Pages (from-to)764-783
Number of pages20
JournalPhysical Review C - Nuclear Physics
Issue number2
StatePublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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