Collisional excitation of metastable oxygen O(1D) atoms through the B3Sigma(-) sub u channel of O2

Details Collisional excitation of metastable oxygen O(1D) atoms through the B3Sigma(-) sub u channel of O2 Collisional excitation of metastable oxygen O(1D) atoms through the B3Sigma(-) sub u channel of O2

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992p%26ss...40.1719j&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 40, no. 12, p. 1719-1721.

Physics

7

Atomic Collisions, Atomic Excitations, Metastable State, Oxygen Atoms, Oxygen Spectra, Molecular Energy Levels, Scattering Cross Sections, Spectroscopic Analysis, Upper Atmosphere

Scientific paper

Spectroscopic data on the shifts and widths of the energy levels of molecular oxygen have been used in the empirical construction of a diabatic potential matrix that characterizes the interactions of the B3Sigma(-) sub u state with the 5Pi sub u, 2 3Sigma(+) sub u, 3Pi sub u, and 1Pi sub u states. The diabatic potential matrix is used here in a scattering theory formulation to calculate the cross-sections for the excitation of O(1D) atoms in collisions of two O(3P) atoms. Total cross-sections are obtained by adding the excitation from the 3Pi sub g channel. The rate coefficient for quenching of O(1D) by O(3P) is evaluated as a function of temperature. The values conflict with a recent analysis of the emission of the oxygen red line in the upper atmosphere.

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