Abstract

The line shape of the non-thermal O( 1D) 6300 Å emission is calculated using the two population model of Schmitt, Abreu and Hays ( Planet. Space Sci. 29, 1095, 1981). The calculated line shapes simulate observations made from a space platform at different zenith angles and altitudes. The non-thermal line shapes observed at zenith angles other than the local vertical have been obtained by using the Addition theorem for spherical harmonics of a Legendre polynomial expansion of the non-thermal population distribution function.

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