Physics
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3314105b&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 14, CiteID L14105
Physics
2
Electromagnetics: Scattering And Diffraction, Ionosphere: Modeling And Forecasting, Ionosphere: Plasma Waves And Instabilities (2772), Ionosphere: Wave/Particle Interactions (7867)
Scientific paper
Experiments performed near dawn during the PARS Summer School at Arecibo in August 2004 show clear evidence of the gyro line in the incoherent scatter radar (ISR) spectra with only six minutes of signal integration. A very weak gyro line was first observed by Behnke and Hagen (1978) requiring two hours of signal integration. Electrons that resonate with the gyro wave mode are well within the thermal distribution. At this point we know of no theory to explain the magnitude of the gyro lines we have detected although it seems clear that the presence of photoelectrons is related to it. We present the experimental results and a comparison with an incoherent scatter numerical model based on the theory developed by Trulsen and Bjørn$\dot {\rm a (1978), which shows a very good correlation. From this comparison, and by combining the gyro line and the plasma line techniques, it is possible to make electron temperature measurements.
Bhatt A. N.
Gerken Kendall E. A.
Kelley Michael C.
Shume E. B.
Sulzer Michael P.
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