Unique Artificial Optical Emission Experiments on the Second Electron Gyroharmonic in the Ionosphere over Alaska

Details Unique Artificial Optical Emission Experiments on the Second Electron Gyroharmonic in the Ionosphere over Alaska Unique Artificial Optical Emission Experiments on the Second Electron Gyroharmonic in the Ionosphere over Alaska

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsa51a..05k&link_type=abstract

American Geophysical Union, Spring Meeting 2007, abstract #SA51A-05

Physics

2403 Active Experiments, 2407 Auroral Ionosphere (2704), 2736 Magnetosphere/Ionosphere Interactions (2431)

Scientific paper

In March of 2007 an "artificial aurora" ionospheric pumping experiment was executed by the HIPAS facility, pumping on the second electron gyro-harmonic at 2.85 MHz. Diagnostics included the Kodiak SuperDARN coherent scatter radar, the new Poker Flat AMISR incoherent scatter radar and a variety of optical instruments. The optical observations were for multiple wavelengths, primary O(1D) 630 nm and O(1S) 557.7 nm, corresponding to different threshold energies. A unique aspect is the first incoherent scatter measurements during an "artificial aurora" experiment on the second electron gyroharmonic. Measurements of the electron and ion temperature are important, in conjunction with optical measurements at multiple wavelengths, because the electron heating efficiency of various wave-plasma interactions can be estimated, e.g. parametric decay instabilities or the thermal parametric instability, resulting in either upper-hybrid, lower-hybrid or Langmuir waves.

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