The 1D-3S transition in atomic oxygen - A new method of measuring the O abundance in planetary thermospheres

Details The 1D-3S transition in atomic oxygen - A new method of measuring the O abundance in planetary thermospheres The 1D-3S transition in atomic oxygen - A new method of measuring the O abundance in planetary thermospheres

Sep 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985georl..12..601m&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 12, Sept. 1985, p. 601-604.

Physics

15

Dayglow, Electron Transitions, Emission Spectra, Oxygen Atoms, Planetary Atmospheres, Thermosphere, Branching (Physics), Electron Orbitals, Monte Carlo Method, Ultraviolet Spectroscopy

Scientific paper

The forbidden 2p4 1D-3s 3S0 transition of atomic oxygen at 1641 Å has been identified in the satellite dayglow spectrum of Huffman et al. (1980). By modelling the optically thick 3P-3S 1304 Å transition, a probability of 5.4×10-6 is determined for 3S0 atoms branching to the 1D state rather than to the 3P ground state. The ratio of the 1641 Å to 1304 Å intensities is found to be a linear function of the atomic oxygen abundance; therefore the ratio can be used to determine the O concentration in optically thick planetary thermospheres.

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