Excitation rates in the auroral nitrogen second positive group

Details Excitation rates in the auroral nitrogen second positive group Excitation rates in the auroral nitrogen second positive group

May 1966

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1966jatp...28..431b&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 28, no. 5, pp. 431-438

Physics

1

Scientific paper

Auroral excitation rates and associated molecular vibrational temperatures in the nitrogen 2PG are examined in the light of recently computed tabular data obtained from high resolution absorption spectra. Tables are presented for use in the calculation of electron excitation rates from the X 1[summation operator]g+ ground state to the C3IIu state of nitrogen. Excitation rates have been obtained from an analysis of observed auroral intensities in the 2PG and are given here as a function of temperature. It is concluded that effective vibrational temperatures of 2000°K cannot be excluded on the basis of present experimental evidence and that a more definite conclusion awaits further measurements of the [upsilon]' = 3 or [upsilon]' = 4 excitation rate, presumably through consideration of the (3-5) or (4-6) bands of the 2PG. Finally, it is suggested that the effective temperature governing the vibrational distribution may correspond to that of the passive electrons.

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