Electron impact dissociative excitation of O2:: 1.: Kinetic energy distributions of fast oxygen atoms -: art. no. 5125

[ 1] The kinetic energy distribution of oxygen atoms resulting from electron impact dissociation of O-2 has been measured. A high- resolution vacuum ultraviolet spectrometer was employed for the measurement of the OI( 115.2 nm, 130.4 nm, 135.6 nm) fine-structure emission line profiles at 35 eV and 100 eV electron impact energies. The deconvolved line profiles of atomic oxygen reveal the existence of a broad line profile (similar to 30 - 40 mAngstrom full width at half maximum) produced from a combination of dissociative excitation and dissociative ionization excitation processes. The atomic oxygen kinetic energy distributions at 100 eV electron impact energy spans the energy range from 1 to 10 eV, with a peak value near 1 eV. The excitation functions of OI( 115.2 nm, 130.4 nm, 135.6 nm) were measured in the vicinity of threshold, from 14 to 50 eV. The PACS classification is 34.80. Gs ( electron scattering- molecular dissociation) and 33.50Dq ( molecular spectra- fluorescence).