Cross sections relevant to gamma-ray astronomy: Alpha-particle-induced reactions onC12,N14, andO16nuclei

Gamma-ray production cross sections have been measured for the gamma-ray lines most strongly excited in the alpha-particle bombardments of ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$, and ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ for alpha-particle energies from threshold to 27 MeV. Tabulations of cross sections averaged over alpha-particle energy bins of 1 MeV are provided for calculations relevant to gamma-ray line astronomy. Relevance to analysis of spectra acquired with gamma-ray spectrometers in space is discussed.