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Fragmentation of sup 197 Au by 21 MeV/nucleon sup 129 Xe

Journal Article · · Physical Review, C (Nuclear Physics); (United States)
;  [1];  [2];  [3];  [4];  [5]
  1. Chemistry Department, Oregon State University, Corvallis, Oregon 97331 (United States)
  2. Chalmers University of Technology, S-412 96 Goeteborg (Sweden)
  3. Studsvik Neutron Research Laboratory, S-611 82 Nykoeping (Sweden)
  4. Chemistry Department, Michigan State University, East Lansing, Michigan 48824 (United States)
  5. Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
We have measured the nuclidic production cross sections and recoil properties for intermediate mass fragments, fission fragments, and heavy residues from the interaction of 21 MeV/nucleon {sup 129}Xe with {sup 197}Au. From these measurements, we have deduced the fragment mass distributions and fragment velocities, momenta, etc. The fragment {ital N}/{ital Z} ratios, isomeric state populations, and mean fragment energies are similar to those observed in low energy, deep inelastic scattering. The stochastic nucleon exchange model correctly predicts the shape of the heavy residue mass distribution, but overestimates (by a factor of 2--3) the fragment longitudinal velocities as does the dissipative fragmentation model, perhaps due to the lack of preequilibrium emission in these models.
DOE Contract Number:
FG06-88ER40402
OSTI ID:
7183209
Journal Information:
Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 46:2; ISSN 0556-2813; ISSN PRVCA
Country of Publication:
United States
Language:
English