Model of sprite luminous trail caused by increasing streamer current

Details Model of sprite luminous trail caused by increasing streamer current Model of sprite luminous trail caused by increasing streamer current

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3704102l&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 4, CiteID L04102

Physics

12

Ionosphere: Ionosphere/Atmosphere Interactions (0335), Atmospheric Processes: Atmospheric Electricity, Atmospheric Processes: Lightning, Atmospheric Composition And Structure: Airglow And Aurora, Ionosphere: Ionospheric Disturbances

Scientific paper

This study investigates a possible physical mechanism responsible for the occurrence of the luminous trail of sprite streamers, which is also known as “afterglow.” According to streamer modeling results, when sprite streamers propagate with expansion, acceleration and brightening, the total current flowing through the streamer body also increases. The increasing current results in the rise of the electric field in the streamer channel far behind the streamer head, which leads to effective production of N2 excited states by electron impact excitation and then the glowing trail.

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