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

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

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jgra..11512332g&link_type=abstract

Journal of Geophysical Research, Volume 115, Issue A12, CiteID A12332

Physics

4

Ionosphere: Active Experiments, Ionosphere: Ionosphere/Atmosphere Interactions (0335), Radio Science: Ionospheric Physics (1240, 2400)

Scientific paper

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.

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