Electron acceleration above thunderclouds

Füllekrug, M. et al. (2013) Electron acceleration above thunderclouds. Environmental Research Letters, 8(3), 035027. (doi: 10.1088/1748-9326/8/3/035027)

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The acceleration of electrons results in observable electromagnetic waves which can be used for remote sensing. Here, we make use of ~4 Hz–66 MHz radio waves emitted by two consecutive intense positive lightning discharges to investigate their impact on the atmosphere above a thundercloud. It is found that the first positive lightning discharge initiates a sprite where electrons are accelerated during the exponential growth and branching of the sprite streamers. This preconditioned plasma above the thundercloud is subsequently exposed to a second positive lightning discharge associated with a bouncing-wave discharge. This discharge process causes a re-brightening of the existing sprite streamers above the thundercloud and initiates a subsequent relativistic electron beam.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Diver, Professor Declan
Authors: Füllekrug, M., Kolmasova, I., Santolik, O., Farges, T., Bór, J., Bennett, A., Parrot, M., Rison, W., Zanotti, F., Arnone, E., Mezentsev, A., Lan, R., Uhlir, L., Harrison, G., Soula, S., van der Velde, O., Pinçon, J.-L., Helling, C., and Diver, D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Environmental Research Letters
Publisher:Institute of Physics Publishing Ltd.
ISSN (Online):1748-9326
Copyright Holders:Copyright © 2013 IOP Publishing Ltd.
First Published:First published in Environmental Research Letters 8(3):035027
Publisher Policy:Reproduced under a Creative Commons License

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