Abstract
Exclusive measurements of light-charged-particle and energy spectra, angular distributions, and emission multiplicities are reported for the two reactions and at a matched excitation energy of 127 MeV. Comparisons are made with statistical model predictions for the evaporative processes in these reactions, which can be characterized as emissions from rotational-energy-dominated systems. The model simulations do well in reproducing a broad range of angular distribution data and the cross-section ratio, using spin distributions derived from fusion cross-section systematics. The same model parameters, however, predict particle energy spectra and coincidence cross sections which are inconsistent with the measurements for both reactions. These results support previous conclusions from model comparisons with inclusive data, and suggest fundamental flaws in the statistical model as applied to light-mass, high-spin, nuclear systems.
- Received 2 December 1999
DOI:https://doi.org/10.1103/PhysRevC.61.054611
©2000 American Physical Society