Thomson scatter radar detection of D-region negative ions at Arecibo

Details Thomson scatter radar detection of D-region negative ions at Arecibo Thomson scatter radar detection of D-region negative ions at Arecibo

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6...89g&link_type=abstract

Geophysical Research Letters, vol. 6, Feb. 1979, p. 89-92. NSF-supported research.

Physics

7

D Region, Radar Detection, Thomson Scattering, Altitude, Atmospheric Chemistry, Bandwidth, Ionic Collisions, Ionospheric Ion Density, Power Spectra, Zenith

Scientific paper

The Arecibo 430 MHz radar has been used to measure D-region Thomson scatter power spectra which display bandwidth and power variations with altitude and solar zenith angle which are consistent with the presence of negative ions. The negative ion-to-electron number density ratio (lambda-), electron density, and electron-to-ion temperature ratio (Te/Ti) have been derived from the spectral data and presented for noontime and sunset conditions. The lambda- = 1 level is found to occur near 70 km at noon and near 80 km at sunset. Values of Te/Ti in the range 1.0 to 1.5, due to probing pulse heating, were observed.

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