Source size scaling of fragment production in projectile breakup
- Laboratoire de Physique Nucleaire, Departement de Physique, Universite Laval, Sainte-Foy, Quebec, G1K 7P4 (CANADA)
Fragment production has been studied as a function of the source mass and excitation energy in peripheral collisions of {sup 35}Cl+{sup 197}Au at 43 MeV/nucleon and {sup 70}Ge+{sup nat}Ti at 35 MeV/nucleon. The results are compared to the Au+Au data at 600 MeV/nucleon obtained by the ALADIN Collaboration. A mass scaling, by {ital A}{sub source}{approximately} 35 to 190, strongly correlated to excitation energy per nucleon, is presented, suggesting a thermal fragment production mechanism. Comparisons to a standard sequential decay model and the lattice-gas model are made. Fragment emission from a hot, rotating source is unable to reproduce the experimental source size scaling. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 383363
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 54; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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