Total Neutron Yields from Light Elements under Proton and Alpha Bombardment

Total neutron production cross sections have been measured for targets of D, T, Li⁷, Be⁹, B¹¹, C¹³, C¹⁴, and F¹⁹ under proton bombardment and of Li⁷, Be⁹, B¹⁰, and Si²⁹ under alpha-particle bombardment. Energy ranges covered differ, but were contained between threshold and 5 Mev for protons and between threshold and 9 Mev for alphas. In several cases cross sections for the inverse reactions, ($n, p$) and (n, α), have been computed and compared, where available, with direct measurements.