Fragment Flow and the Multifragmentation Phase Space

Authors

G. J. Kunde, Gesellschaft für Schwerionenforschung
W. C. Hsi, Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University
W. D. Kunze, Gesellschaft für Schwerionenforschung
A. Schüttauf, Institut für Kernphysik, Universität Frankfurt
A. Wörner, Gesellschaft für Schwerionenforschung
M. Begemann-Blaich, Gesellschaft für Schwerionenforschung
Th. Blaich, Institut für Kernchemie, Universität Mainz
D. R. Bowman, Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University
R. J. Charity, Department of Chemistry, Washington University
A. Cosmo, Centre de Recherches Nucléaires
A. Ferrero, Dipartimento di Fisica, Universitá di Milano and INFN
C. K. Gelbke, Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University
J. Hubele, Gesellschaft für Schwerionenforschung
G. Imme, Dipartimento di Fisica dell' Universitá and INFN
I. Iori, Dipartimento di Fisica, Universitá di Milano and INFN
P. Kreutz, Institut für Kernphysik, Universität Frankfurt
V. Lindenstruth, Gesellschaft für Schwerionenforschung
M. A. Lisa, Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University
W. G. Lynch, Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University
U. Lynen, Gesellschaft für Schwerionenforschung
M. Mang, Institut für Kernphysik, Universität Frankfurt
T. Möhlenkamp, Forschungszentrum Rossendorf
A. Moroni, Dipartimento di Fisica, Universitá di Milano and INFN
W. F.J. Müller, Gesellschaft für Schwerionenforschung
M. Neumann, Institut für Kernphysik, Universität Frankfurt
B. Ocker, Institut für Kernphysik, Universität Frankfurt
C. A. Ogilvie, Gesellschaft für Schwerionenforschung
Graham F. Peaslee, Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State UniversityFollow
J. Pochodzalla, Gesellschaft für Schwerionenforschung
G. Raciti, Dipartimento di Fisica dell' Universitá and INFN
T. Rubehn, Gesellschaft für Schwerionenforschung
H. Sann, Gesellschaft für Schwerionenforschung
W. Seidei, Forschungszentrum Rossendorf
V. Serfling, Institut für Kernphysik, Universität Frankfurt
L. G. Sobotka, Department of Chemistry, Washington University
J. Stroth, Gesellschaft für Schwerionenforschung
L. Stuttge, Centre de Recherches Nucléaires
S. Tomasevic, Centre de Recherches Nucléaires

Document Type

Article

Publication Date

1-2-1995

Publication Source

Physical Review Letters

Volume Number

74

Issue Number

1

First Page

38

Last Page

41

Publisher

American Physical Society

Abstract

Fragment distributions have been measured for Au + Au collisions at EA=100 and 1000 MeV. A high detection efficiency for fragments was obtained by combining the ALADIN spectrometer and the MSU-Miniball/WU-Miniwall array. At both energies the maximum multiplicity of intermediate mass fragments (IMF) normalized to the size of the decaying system is about one IMF per 30 nucleons but the element distributions show significant differences. Within a coalescence picture the suppression of heavy fragments in central collisions at EA=100 MeV may be related to a reduction of the density in momentum space which is caused by the collective expansion.

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