Sprite Spectra at 1000 fps

Details Sprite Spectra at 1000 fps Sprite Spectra at 1000 fps

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmae51a..08s&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #AE51A-08

Physics

3324 Lightning, 3334 Middle Atmosphere Dynamics (0341, 0342), 3304 Atmospheric Electricity

Scientific paper

The physical processes involved in sprites develop on very fast time scales, and high speed spectroscopy may be the key to unraveling them. For this purpose we conducted a field campaign at the Langmuir Laboratory in Soccorro, NM, during the New Moon period in August, 2004. Spectra with millisecond resolution were recorded by a large aperture imaging spectrograph with the 1000 fps imager previously used by Stenbaek-Nielsen et al. (2002) to image sprites. The recordings were made over two wavelength ranges, 550-730 nm, and 620-800 nm, covering the brightest molecular nitrogen bands in the optical/near infrared emissions previously reported by Hampton et al. (1996). Preliminary analysis of the ms spectra show these band structures to be well resolved, but at the time of this writing it is uncertain if any ionized lines were present. Additional spectra at up to 40 kHz resolution were recorded by a newly developed spectral photometer. Analysis of this data set is ongoing.

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