Reaction 27Al + α at E/sub b/ < 140 MeV: II

Both light and heavy mass fragments are observed giving angular distribution, energy, and particle identification information. Total cross section yields are compared to γ-ray-based values reported in the preceding paper. The mass fragment data are supportive of the γ-ray data particularly the observed Doppler broadening of the γ-ray lines. Comparison of the mass fragment and γ-ray data with both pre-equilibrium-evaporation and intranuclear cascade code predictions is discussed. Possible reaction mechanism models are discussed. Approximately 30% of the reaction cross section is assigned to direct processes, some involving collective surface excitations that appear to be memory conserving. Various possible direct pre-equilibrium processes are discussed