The excitation of the Chamberlain and Herzberg 2 bands in the terrestrial nightglow

Physics – Atomic Physics

Scientific paper

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Absorption Spectra, Herzberg Bands, Nightglow, Oxygen Spectra, Spectroscopic Analysis, Atomic Excitations, Models, Quenching (Atomic Physics), Spectrophotometry, Ultraviolet Spectra

Scientific paper

A previous nightglow model was augmented to include the Chamberlain and Herzberg 2 emissions. The Chamberlain data derive from two rocket measurements of the volume emission profile of the 5 to 2 band combined with ground based spectroscopic measurements of the nightglow in the near UV. The Herzberg 2 data come solely from the ground based measurements. The excitation mechanism that is consistent with the data involves only direct excitation through the three body association of oxygen atoms. This is in contrast to the atmospheric band and OI green line emissions. Empirical parameters for the quenching of the two upper states were derived under the assumption that only O and O2 are responsible.

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