Collisional excitation of metastable oxygen O(D) atoms through the B∑u channel of O2 |
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| Authors: | M J Jamieson M Finch R S Friedman and A Dalgarno |
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| Institution: | Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, U.S.A. |
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| Abstract: | Pectroscopic 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 B3∑?u state with the 5Πu, 23∑+u, 3Πu and 1Πu states. The diabatic potential matrix is u 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 3Πg, 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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