Physics
Scientific paper
Dec 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....8710541d&link_type=abstract
Journal of Geophysical Research, vol. 87, Dec. 1, 1982, p. 10541-10547.
Physics
11
Auroral Spectroscopy, Emission Spectra, Molecular Rotation, Nitrogen, Vegard-Kaplan Bands, Spectral Bands, Spectrum Analysis, Transition Probabilities, Trapped Particles, Vibrational Spectra
Scientific paper
Synthetic spectra of the N2 Vegard-Kaplan system are given for general reference. The material contains the spectrum across the entire range of emission (1500-6500 A) calculated for auroral conditions and three typical resolutions (3.5, 10, and 25 A); also included are individual band profiles calculated for 300-5000 K rotational temperature and 0-5 A spectral halfwidth. For the auroral conditions a rotational temperature of 800 K is assumed; the vibrational populations are inferred from matching synthetic spectra and various published data. The calculations suggest a weak Vegard-Kaplan auroral contribution in the 1500-2000 A region of the far ultraviolet where the N2 Lyman-Birgo-Hopfield system is the dominant feature. Simulation of Vegard-Kaplan emission from nitrogen trapped in a frozen argon matrix at 4.2 K is included as an example of a more unusual source.
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