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Rise and fall of electron temperatures: Ohmic heating of ionospheric electrons from underdense HF radio wave pumping

Research output: Contribution to journalJournal article

Published

Journal publication date23/12/2010
JournalJournal of Geophysical Research
Journal numberA12332
Volume115
Number of pages9
Pages1-9
Original languageEnglish

Abstract

Here we present electron temperature variations observed with incoherent scatter radar during a European Incoherent Scatter Scientific Association Heating experiment with high-frequency (HF) radio wave transmission at frequencies above the peak ionospheric critical frequency. The electron temperature increased from 2000 K up to 2800 K during the HF transmission periods. During the experiment both pump frequency and polarization were altered between pump pulses. The observed temperature variation is compared with numerical solutions to the electron energy equation with ohmic heating modeling the effect of the radio wave heating of the plasma. Agreement between observations and model is found to be good.

Bibliographic note

Copyright (2010) American Geophysical Union. Further reproduction or electronic distribution is not permitted.