Excitation of O2+ bands by electron impact

Abstract
Absolute excitation cross sections for the emission of the first negative bands of O2+ under electron impact on O2 have been obtained. The peak cross section for the b 4Σg- state was found to be 325 × 10-18 cm2 at 100 eV. The results are compared with proton and other electron impact data. Some preliminary results on the second negative system are also given.