Fragment Distributions for Highly Charged Systems

C. Williams, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
W. G. Lynch, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
C. Schwarz, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
M. B. Tsang, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
W. C. Hsi, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
M. J. Huang, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
D. R. Bowman, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
J. Dinius, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
C. K. Gelbke, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
D. O. Handzy, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
G. J. Kunde, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
M. A. Lisa, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
Graham F. Peaslee, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State UniversityFollow
L. Phair, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
A. Botvina, Institute for Nuclear Research, 117312 Moscow, Russia
M-C. Lemaire, Laboratoire National SATURNE, CEN Saclay
S. R. Souza, Laboratoire National SATURNE, CEN Saclay
G. Van Buren, Department of Chemistry, Washington University
R. J. Charity, Department of Chemistry, Washington University
L. G. Sobotka, Department of Chemistry, Washington University
U. Lynen, Gesellschaft für Schwerionenforschung
J. Pochodzalla, Gesellschaft für Schwerionenforschung
H. Sann, Gesellschaft für Schwerionenforschung
W. Trautmann, Gesellschaft für Schwerionenforschung
D. Fox, Department of Chemistry and IUCF, Indiana University
R. T. de Souza, Department of Chemistry and IUCF, Indiana University
N. Carlin, nstituto de Fisica, Universidade de Sãο Paulo

Document Type

Article

Publication Date

5-1-1997

Publication Source

Physical Review C

Volume Number

55

Issue Number

5

First Page

R2132

Last Page

R2136

Publisher

American Physical Society

Abstract

Charge and transverse energy distributions for intermediate mass fragments have been extracted for central 84Kr+197Au collisions at E/A=35-400 MeV. The slopes of the measured fragment charge distributions decrease monotonically with incident energy, consistent with the expectations for highly charged systems, but not with recent critical exponent analyses. Statistical model calculations, which reproduce the experimental trends, suggest that post-breakup fragment secondary decays alter significantly the observed charge distributions. Radial expansion velocities extracted from these calculations follow the systematics of Au+Au collisions.

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