Statistical nature of nuclear multifragmentation
- Instituto de Fisica, Universidade Federal do Rio de Janeiro, C.P. 68528, 21945-970 Rio de Janeiro (Brazil)
A recent analysis of multifragmentation data in terms of an elementary binary decay appears to imply that the decay is sequential and from a thermalized source. This last feature would imply a lack of sensitivity to dynamical effects, at least in this multifragmentation data. We discuss this analysis using a simultaneous statistical multifragmentation model (SMM), which assumes decay from a thermalized source, and also employing a molecular dynamics model (MDM). The elementary binary decay analysis of the SMM predictions yields results which are qualitatively similar to those of the data. The differences are shown to stem from superposition of processes associated with very different impact parameters. Thus the data are not inconsistent with simultaneous decay. The MDM calculations, on the other hand, disagree with the data. We suggest, however, that more reliable dynamical calculations are needed before accepting an absence of dynamical effects in these data. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 542316
- Journal Information:
- Physical Review, C, Vol. 56, Issue 3; Other Information: PBD: Sep 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comparison of fast cascade plus statistical models for heavy ion induced multifragmentation reactions
Study of the decay of hot nuclei formed in {sup 139}La-induced reactions at {ital E}/{ital A} = 45 MeV by a hybrid dynamical-statistical calculation