Excitation Functions for Lithium-6 Induced Reactions on Aluminum-27

Excitation functions for a number of Li⁶-induced reactions on Al²⁷ have been studied using stacked foil techniques and the Li⁶ ion beam from the Yale Heavy Ion Accelerator. Excitation functions corresponding to radioactive residual nuclei P³², P³⁰, Si³¹, Al²⁹, Al²⁸, Mg²⁷, Na²⁴, and Na²² have been measured in the Li⁶ energy range from 1 to 63.3 Mev. The data strongly suggest that the P³², P³⁰, and Si³¹ result from compound system processes and the Na²² and Na²⁴ from a predominant direct knockout process. In the cases of Al²⁸ and Al²⁹ both compound system and direct pickup reaction amplitudes contribute to the reaction yield.