Difference in quenching of N/2D3/2 0/ and N/2D5/2 0/ by atomic oxygen

Details Difference in quenching of N/2D3/2 0/ and N/2D5/2 0/ by atomic oxygen Difference in quenching of N/2D3/2 0/ and N/2D5/2 0/ by atomic oxygen

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.1581s&link_type=abstract

Journal of Geophysical Research, vol. 86, Mar. 1, 1981, p. 1581-1584. Research supported by the Universitetet i Tromso, Norges

Physics

Atomic Physics

5

Auroral Spectroscopy, Nitrogen Atoms, Optical Emission Spectroscopy, Oxygen Atoms, Quenching (Atomic Physics), Atmospheric Composition, Electron States, Forbidden Transitions, Ground State, Radiative Transfer

Scientific paper

Variation in the ratio of the auroral intensities of forbidden line N I 5198.5 A and 5200.7 A emissions was observed at Svalbard, Norway using a 1-m Ebert-Fastie spectrophotometer operating in a photon-counting mode. The ratio varied between 1.56 + or - 0.06 and 1.20 + or - 0.08. The variation may proceed from a difference in the quenching of N(2D3/2 0) and N(2D5/2 0) by O(3 P2,1, 0) resulting from the requirement of the conservation of total angular momentum of the N + O system. The observed variation in the forbidden line N I emission ratio with changes in the average energy of auroral electrons in the cusp region indicates a height effect.

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