Multifragmentation in E/A=35 MeV Collisions: Evidence for a Coulomb Driven Breakup?

M. D'Agostino, Dipartimento di Fisica and INFN, Via Irnerio 46, 40126 Bologna, Italy
G. J. Kunde, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
P. M. Milazzo, Dipartimento di Fisica and INFN, Via Irnerio 46, 40126 Bologna, Italy
J. D. Diniu, Dipartimento di Fisica and INFN, Via Irnerio 46, 40126 Bologna, Italy
M. Bruno, Dipartimento di Fisica and INFN, Via Irnerio 46, 40126 Bologna, Italy
N. Colonna, INFN, Via Amendola 173, 70126 Bari, Italy
M. L. Fiandri, Dipartimento di Fisica and INFN, Via Irnerio 46, 40126 Bologna, Italy
C. K. Gelbke, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
T. Glasmacher, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
F. Gramegna, INFN, Laboratori Nazionali di Legnaro, Via Romea 4, 35020 Legnaro, Italy
D. O. Handzy, 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. Huang, 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
W. G. Lynch, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
P. F. Mastinu, Dipartimento di Fisica and INFN, Via Irnerio 46, 40126 Bologna, Italy
C. P. Montoya, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University
A. Moroni, INFN, Via Celoria 12, 20133 Milano, Italy
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
R. Rui, Dipartimento di Fisica and INFN, Via Valerio 2, 34127 Trieste, Italy
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
G. Vannini, Dipartimento di Fisica and INFN, Via Valerio 2, 34127 Trieste, Italy
C. Williams, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University

Document Type

Article

Publication Date

12-11-1995

Publication Source

Physical Review Letters

Volume Number

75

Issue Number

24

First Page

4373

Last Page

4376

Publisher

American Physical Society

Abstract

Multifragment disintegrations have been measured for central Au+Au collisions at EA=35 MeV. Fragment emission occurs predominantly at low center of mass energies of about EA≈5 MeV, consistent with a Coulomb dominated breakup of a single source. Mean fragment multiplicities of ⟨NIMF⟩≈10.8 are extracted after correction for the detection efficiency. The fragment charge distributions decrease much more gradually than expected from scaling laws recently applied to the extraction of critical exponents for the nuclear liquid-gas phase transition from nuclear collisions.

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