Breakup time scale studied in the 8 GeV/c pi- + 197Au reaction
Nuclear Experiment
2007-05-23 v1
Abstract
Experimental data from the reaction of an 8.0 GeV/c pi- beam incident on a 197Au target have been analyzed in order to investigate the integrated breakup time scale for hot residues. Alpha-particle energy spectra and particle angular distributions supported by a momentum tensor analysis suggest that at large excitation energy, above 3-5 MeV/nucleon, light-charged particles are emitted prior to or at the same time as the emission of the heavy fragments. Comparison with the SMM and GEMINI models is presented. A binary fission-like mechanism fits the experimental data at low excitation energies, but seems unable to reproduce the data at excitation energies above 3-5 MeV/nucleon.
Keywords
Cite
@article{arxiv.nucl-ex/0009012,
title = {Breakup time scale studied in the 8 GeV/c pi- + 197Au reaction},
author = {L. Pienkowski and K. Kwiatkowski and T. Lefort and W. -c. Hsi and L. Beaulieu and A. Botvina and B. Back and H. Breuer and S. Gushue and R. G. Korteling and R. Laforest and E. Martin and E. Ramakrishnan and L. P. Remsberg and D. Rowland and A. Ruangma and V. E. Viola and E. Winchester and S. J. Yennello},
journal= {arXiv preprint arXiv:nucl-ex/0009012},
year = {2007}
}
Comments
12 pages including 3 postscript figures