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Detailed Reference Information
Gentieu et al. 1979
Gentieu, E.P., Feldman, P.D. and Meier, R.R. (1979). Spectroscopy of the extreme ultraviolet dayglow at 6.5Å resolution: Atomic and ionic emissions between 530 and 1240Å. Geophysical Research Letters 6: doi: 10.1029/GL006i004p00329. issn: 0094-8276.

EUV spectra (530--1500¿) of the day airglow in up, down and horizontal aspect orientations have been obtained with 6.5¿ resolution and a limiting sensitivity of 5R from a rocket experiment. Below 834¿ the spectrum is rich in previously unobserved OII transitions connecting with 4S0, 2D0, and 2P0 states. Recent broad-band photometric observations of geocoronal HeI 584¿ emission can be understood in terms of the newly observed OII emissions. The OI 989¿ and OI 1304¿ emissions exhibit similar dependence on altitude and viewing geometry with the OI 989¿ brightness 1/15 that of OI 1304. Emission at 1026¿ is identified as geocoronal HI Lyman-&bgr; rather than OI multiplet emission and observed intensities agree well with model estimates. An unexpectedly high NI 1200/NI 1134¿ brightness ratio is evidence of a significant contribution from photodissociative excitation of N2 to the NI 1200¿ source function.

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Geophysical Research Letters
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American Geophysical Union
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