Composition, temperatures and electron loss coefficient of the topside ionosphere over Arecibo

Details Composition, temperatures and electron loss coefficient of the topside ionosphere over Arecibo Composition, temperatures and electron loss coefficient of the topside ionosphere over Arecibo

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jatp...39.1317h&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 39, Nov.-Dec. 1977, p. 1317-1324.

Physics

1

Diurnal Variations, Electron-Ion Recombination, Ionospheric Composition, Ionospheric Electron Density, Ionospheric Temperature, Upper Ionosphere, Autocorrelation, Cations, Electron Energy, Energy Transfer, Ion Temperature, Night Sky, Oxygen Ions, Recombination Coefficient

Scientific paper

Results of analysis of about 200 autocorrelation functions for the period from about 1600 hr on May 22 to 1800 hr on May 23, 1968, covering a height range from 175 to 1200 km are presented. It is found that the ionosphere consists almost exclusively of O(+) ions. On several occasions, the electron temperature profiles show a deep minimum. These deep minima correspond approximately to the height at which the corresponding electron density profiles show a maximum. The rates of energy transfer from electron to ions are calculated. The variation of the experimental electron density with time is utilized to calculate the electron loss coefficient. It is found that the coefficient at 300 km is approximately 2.95 times 10 to the minus fourth power. An estimate of the vibrational temperature of N2 is made from the value of the electron loss coefficient obtained and it is found that vibrational temperature is about 1950 K at 300 km.

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