Electron Collision Excitation of Metastable Levels in N I, N II, O I, O II, O III.
NAVAL RESEARCH LAB WASHINGTON D C
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Electron impact excitation cross sections have been calculated for transitions between terms of the ground configuration of neutral and ionized nitrogen and oxygen. The cross sections have been obtained by a distorted wave approximation and the accuracy of the results is estimated by a comparison with the close-coupling method and with the exact-resonance approximation. For neutral nitrogen and oxygen, the DW method is improved by the inclusion of a polarization potential with a cut-off parameter, which is determined from the variation condition. Excitation rates have been computed for temperatures from 1,000 to 1,500,000K.
- Atmospheric Physics
- Atomic and Molecular Physics and Spectroscopy