The Middle Ultraviolet-Visible Spectrum of H2 Excited by Electron Impact

Details The Middle Ultraviolet-Visible Spectrum of H2 Excited by Electron Impact The Middle Ultraviolet-Visible Spectrum of H2 Excited by Electron Impact

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..gecowp610j&link_type=abstract

American Physical Society, 51st Annual Gaseous Electronics Conference & 4th International Conference on Reactive Plasmas October

Physics

Scientific paper

The electron-impact-induced emission spectrum of H2 has been measured in the extended wavelength region 175-530 nm at a spectral resolution of 1.7 nm (FWHM). The laboratory spectra observed in the middle ultraviolet (MUV) and visible spectral region are characterized by underlying H2 (a ^3Σ _g^+ arrow b ^3Σ _u^+) continuum emission, together with many strong lines assigned to the radiative decay of the gerade singlet states of H_2, and to members of the H Balmer series resulting from dissociative excitation of H_2. Our calibrated MUV spectral data, obtained at 14, 19 and 100 eV electron-impact energies, provide absolute emission cross sections of these H2 lines and will assist in the interpretation of planned Galileo Ultraviolet Spectrometer observations of Jupiter's aurora in this wavelength region.

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