Electron impact excitation of the Rydberg states in O2 in the 7–10 eV energy-loss region

Abstract

Electron impact energy‐loss spectra of O₂ in the 7–10 eV region has been investigated at low impact energies and high scattering angles. Under these conditions a number of new transitions have been found which do not appear in optical spectra. Bands at 8.595, 8.826, 9.045, and 9.27 eV have been assigned to the 3sσ_g ¹Π (v′=0, 1, 2, and 3) excitations, respectively, and the idenfification of the corresponding ³Π_g bands have been reconfirmed. New transitions appearing at 9.13, 9.32, 9.51, 9.58, and 9.78 eV cannot be unambiguously assigned on the basis of the presently available information.