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Coincidence studies of heavy fragment pairs in the reaction 343 MeV40Ar+197Au |
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| Authors: | E. Duek L. Kowalski M. Rajagopalan J. M. Alexander T. W. Debiak D. Logan M. Kaplan M. Zisman Y. LeBeyec |
| Affiliation: | 1. Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York, USA 2. Department of Physics and Geoscience, Montclair State College, Upper Montclair, New Jersey, USA 3. Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York, USA 4. Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA 5. Lawrence Berkeley Laboratory, Berkeley, California, USA 6. Institut de Physique Nucleaire, Orsay, France |
| Abstract: | Measurements are reported for correlated energies and angles of heavy fragments from reactions of 343 MeV40Ar with197Au. The results show a continuous evolution of the mass distributions from fission-like products at angle pairs of ≈60 and 300 degrees to deeply inelastic projectile-like products at ≈45° and 300°. Certain difficulties are emphasized for the use of the “symmetric fragmentation” cross sections in the context of current theoretical models (e.g. the “extra push” theory). The fission-like reactions have been studied in some detail and the results have been compared to a Monte Carlo kinematic simulation. To account for the experimental results forward-peaked light particle emission (n, H, He) must occur in a large fraction of the fission-like reactions. |
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