The Lyman-Birge-Hopfield bands in aurora

Physics

Scientific paper

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Auroral Ionization, Auroras, Electron Transitions, Emission Spectra, Lyman Spectra, Electron States, Luminosity, Nitrogen, Oxygen, Spectral Bands, Ultraviolet Emission

Scientific paper

A numerical model of the luminosity of the Lyman-Birge-Hopfield bands in aurora is presented. The model is based on a new method of determining the production rates of atmospheric species excited by auroral electrons during electron precipitation. The direct relationship between the initial electron flux and the production rate of the excited atmospheric gas at an arbitrary altitude avoids the solution of the electron transport equation. The contribution of intersystem transitions between electron states to the population of the vibration levels of the N2 electron state is discussed. The dependence of ratios of intensities of the LBH bands on the initial electron energy is examined. Experimental results show good agreement with theoretical results.

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