Other
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa12a1084b&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SA12A-1084
Other
0310 Airglow And Aurora, 0355 Thermosphere: Composition And Chemistry, 2423 Ionization Mechanisms, 7549 Ultraviolet Emissions
Scientific paper
Photodissociation and photodissociative ionization (PDI) excitations of molecular nitrogen result in a number of relatively bright far ultraviolet emission features in the dayglow in addition to the more commonly analysed emissions generated by photoelectron impact (e.g., the N2 LBH band system). Provided spectral resolutions are high enough, several N2 PDI features (e.g., N+ 1085 Å ) are of considerable interest as remote sensing alternatives to N2 LBH. Recent work with Astro-1/Hopkins Ultraviolet Telescope (HUT) data [Bishop and Feldman, JGR, 108(A6), 1243, doi:10.1029/2001JA000330, 2003] made this point but also showed that the emission ratios of the N2 PDI N*,N+ lines in the dayglow are not consistent with the ratios of Samson et al [J Chem Phys, 95, 717-719, 1991] obtained with a synchrotron light source. The Far Ultraviolet Spectroscopic Explorer (FUSE) dayglow measurements reported in Feldman et al [JGR, 106, 8119-8129, 2001] are of sufficient spectral resolution to provide reference intensities and emission ratios. First-principles model analysis results for the FUSE LWRS (``low resolution'', 0.38 Å ) dayglow data from September 1999 for N2 PDI N*,N+ and other N2 features are presented and compared with the Astro-1/HUT analysis results.
Bishop James
Feldman Paul
Stevens Michael Hugh
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