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|Title:||The dependence of F-region electron heating on HF radio pump power: Measurements at EISCAT Tromso|
Rietveld, M. T.
Yeoman, T. K.
Kosch, M. J.
|Publisher:||American Geophysical Union (AGU); Wiley|
|Citation:||Journal of Geophysical Research-SPACE PHYSICS, 2012, 117|
|Abstract:|| Measurements of ionospheric electron temperature enhanced by the action of a powerful high-frequency radio wave on the F-region at the EISCAT facility near Tromsø, Norway are analyzed to obtain the electron heat source due to the radio wave as a function of transmitter power. The absorption of the wave in the D-region is accounted for and is found to have a significant influence on the F-region heating, especially due to variations in the D-region electron density during the experiment. It is found that the efficiency of F-region heating expressed in terms of the electron heating rate as a function of radio wave power flux is higher at higher transmitter powers. This behavior seems to be consistent with the development of geomagnetic field-aligned plasma density irregularities which are associated with the conversion of the radio wave to electrostatic upper-hybrid waves. At the highest power fluxes, the efficiency appears to be close to 100%.|
|Rights:||Copyright © 2012 by the American Geophysical Union. All rights reserved. Archived with reference to Usage Permissions granted to authors, available at http://publications.agu.org/author-resource-center/usage-permissions/|
|Appears in Collections:||Published Articles, Dept. of Physics and Astronomy|
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