Physics
Scientific paper
Dec 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ge%26ae..15.1103d&link_type=abstract
Geomagnetizm i Aeronomiia, vol. 15, Nov.-Dec. 1975, p. 1103-1105. In Russian.
Physics
Diffusion Coefficient, Electron Density (Concentration), Meteor Trails, Radio Meteors, Radar Attenuation, Radar Echoes, Radii
Scientific paper
Measurement of the diffusion coefficient D and the initial radius of a meteor trail is proposed by simultaneously observing saturated and transient trails at two or more wavelengths. The analysis makes use of Delov's (1974) relations expressing the volume electron density as the linear electron density of the trail divided by pi times the square of the radius of the trail, and expressing the critical electron density at which attenuation of the radar echo begins as pi divided by the wavelength squared times the classical electron radius. The method enables determination of the linear electron density as well. Analysis of 20 meteor trails and their radar returns by the method yielded a value for D of 5 sq m/sec.
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