Excitation Curves for Reactions of Alpha Particles withC12from 15 to 19 Mev

Abstract

Exploratory measurements of the 4.43-Mev gamma rays from the reaction C^o^OC 12 * and of the total cross section for the reaction C u (a,n)0 16 for incident energies between 15 and 19 Mev are reported. The two excitation curves appear somewhat anticorrelated, the maxima of the O 15 yield occurring at 15.5, 16.6, 17.3, and 18.5 Mev, those of the gamma-ray yield at 15.9 and 18.0 Mev. There is no evident correlation between these curves and the differential (a,p) cross section reported by Priest, Tendam, and Bleuler.