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arXiv · 1002.3949

NUV/Blue spectral observations of sprites in the 320-460 nm region: ${\mathrm N_2}$ (2PG) Emissions

M. J. Heavner·J. S. Morrill·C. Siefring·D. D. Sentman·D. R. Moudry·E. M. Wescott·E. J. Bucsela
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Abstract

A near-ultraviolet (NUV) spectrograph (320-460 nm) was flown on the EXL98 aircraft sprite observation campaign during July 1998. In this wavelength range video rate (60 fields/sec) spectrographic observations found the NUV/blue emissions to be predominantly N2 (2PG). The negligible level of N2+ (1NG) present in the spectrum is confirmed by observations of a co-aligned, narrowly filtered 427.8 nm imager and is in agreement with previous ground-based filtered photometer observations. The synthetic spectral fit to the observations indicates a characteristic energy of ~1.8 eV, in agreement with our other NUV observations.

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BibTeXRIS

M. J. Heavner, J. S. Morrill, C. Siefring, D. D. Sentman, D. R. Moudry, E. M. Wescott, E. J. Bucsela. 2010-02-21. NUV/Blue spectral observations of sprites in the 320-460 nm region: ${\mathrm N_2}$ (2PG) Emissions. https://doi.org/10.1029/2009ja014858

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