Articles | Volume 34, issue 6
Ann. Geophys., 34, 573–580, 2016
https://doi.org/10.5194/angeo-34-573-2016
Ann. Geophys., 34, 573–580, 2016
https://doi.org/10.5194/angeo-34-573-2016

ANGEO Communicates 23 Jun 2016

ANGEO Communicates | 23 Jun 2016

Secondary electron emission from meteoric smoke particles inside the polar ionosphere

Carsten Baumann et al.

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Meteor smoke particles (MSPs), originating from evaporated meteoric matter at 60–110 km altitude, are present in the whole atmosphere including polar regions. As electron precipitation is present at high latitudes, these MSPs are bombarded by energetic electrons. The energetic electrons can enter the MSPs and excite secondary electrons. That can lead to a change of the charge state of these MSPs. The study finds that other charging processes, e.g., electron attachment, are more important.