Atomic emission in the ultraviolet nightglow

Details Atomic emission in the ultraviolet nightglow Atomic emission in the ultraviolet nightglow

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16.1453s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, Dec. 1989, p. 1453-1456.

Physics

16

Atmospheric Radiation, Nightglow, Oxygen Atoms, Resonance Lines, Ultraviolet Spectrometers, High Resolution, Orionid Meteoroids, Recombination Reactions

Scientific paper

An observation of the ultraviolet nightglow between 2670 A and 3040 A was conducted over White Sands Missile Range on October 22, 1984, at 0020 hours LST during the Orionids meteor shower. A 1/4-meter UV spectrometer operating at 3.5 A resolution viewed the earth's limb at tangent heights between 90 km and 110 km for 120 seconds. By inverting the observed limb intensities, a total zenith intensity of 1.4 kR is inferred for the Herzberg I system. Excess emission above the Herzberg I (7,3) band at 2852 A is identified as the Mg I resonance line. The intensity ratio of the Herzberg I band system to the 2972 A line from O(1S) was less than that predicted from the accepted O(1S) branching ratio and acceptable ratios of Herzberg I to 5577 A emissions. Arguments supporting the identification of the Herzberg III band system are also advanced.

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