Physics
Scientific paper
Jun 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jatp...51..483s&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 51, June 1989, p. 483-495. Research supported by the Oskar
Physics
26
F Region, Incoherent Scatter Radar, Radar Data, Space Plasmas, Atmospheric Composition, Eiscat Radar System (Europe), Ion Motion, Positive Ions, Velocity Distribution
Scientific paper
A technique is given for fitting incoherent scatter radar data from nonthermal F-region ionospheric plasma. Values of the shape distortion factor associated with deviations of the ion velocity distribution from a Maxwellian distribution, and ion temperatures may be derived if the angle between the line-of-sight and the geomagnetic field is greater than about 15-20 deg. For small aspect angles, the analysis is restricted to determining the line-of-sight temperature, because the theoretical spectrum is insensitive to nonthermal effects when the plasma is viewed along directions almost parallel to the magnetic field. Examples are given of fits to EISCAT observational data.
Bromage Barbara J. I.
Farmer Dean A.
Lockwood Marian
Suvanto Kari
Winser K. J.
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