Connotea
CiteULike
del.ico.us
BibSonomyAbstract
JOURNAL OF GEOPHYSICAL RESEARCH,
VOL. 108,
5125,
10 PP., 2003
doi:10.1029/2000JE001422
Electron impact dissociative excitation of O2: 1. Kinetic energy distributions of fast oxygen atoms
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
The kinetic energy distribution of oxygen atoms resulting from electron impact dissociation of O2 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 (∼30–40 mÅ 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).
Received 6 November 2000; accepted 6 September 2001; published 25 November 2003.
Citation: (2003), Electron impact dissociative excitation of O2: 1. Kinetic energy distributions of fast oxygen atoms, J. Geophys. Res., 108(E11), 5125, doi:10.1029/2000JE001422.
Cited By