NUV/Blue spectral observations of sprites in the 320-460 nm region: ${\mathrm N_2}$ (2PG) Emissions
| Autor: | Heavner, M. J., Morrill, J. S., Siefring, C., Sentman, D. D., Moudry, D. R., Wescott, E. M., Bucsela, E. J. |
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| Rok vydání: | 2010 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1029/2009JA014858 |
| Popis: | 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. Comment: 7 pages, 2 figures, 1 table, JGR Space Physics "Effects of Thunderstorms and Lightning in the Upper Atmosphere" Special Section |
| Databáze: | arXiv |
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