Direct investigation of the ion content of the mesosphere and upper stratosphere

Details Direct investigation of the ion content of the mesosphere and upper stratosphere Direct investigation of the ion content of the mesosphere and upper stratosphere

Nov 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975kosis..13..940s&link_type=abstract

Kosmicheskie Issledovaniia, vol. 13, Nov.-Dec. 1975, p. 940-942. In Russian.

Computer Science

Ion Density (Concentration), Mass Spectroscopy, Mesosphere, Rocket-Borne Instruments, Stratosphere, Atmospheric Composition, Filtration, Free Molecular Flow, Heavy Ions, Knudsen Flow

Scientific paper

A rocket-borne apparatus is described which permits the investigation of the ion content of the atmosphere in the layer between 30 and 80 km, in which the transition from continuous (Knudsen numbers much less than unity) to free molecular (Knudsen numbers much greater than unity) flow regimes occurs. The resolution of the mass-spectrometer is decreased and the electrode voltage lowered in comparison with those conventionally used in the investigation of ions in the upper atmosphere, permitting the investigation of high-mass positive ions within the desired altitude range. The system incorporates a monopole mass filter which limits the ions reaching the collector to a narrow size range. Results of measurements of the atmospheric ion content below 80 km indicate that it has laminar character both with respect to concentration and composition, with the upper layers containing relatively large numbers of the heavier ions.

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