Accession Number : AD0802701

Title :   PRECIPITATION OF 400 KEV ELECTRONS IN THE AURORAL ZONE.

Descriptive Note : Rept. for Jun 64-Jun 66,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA LABS DIV

Personal Author(s) : Blake, J. Bernard ; Freden, Stanley C. ; Paulikas, George A.

Report Date : SEP 1966

Pagination or Media Count : 20

Abstract : Measurements of precipitating electrons with E>400 kev were made from 25 February to 10 March 1965 with a solid-state detector aboard a near polar satellite at altitudes from 170 to 220 km. Auroral zone data were taken (3.5 < or = L < or = 7.5) in two longitude intervals (170 degrees E to 225 degrees E and 278 degrees E to 300 degrees E). During every auroral zone pass a flux of electrons, E > 400 kev, was observed ranging from 1000 electrons to 100,000 electrons/sq cm-sec, while at other latitudes the maximum flux observed was less than 150 electrons/sq cm-sec. For the 278 degrees to 300 degrees longitude interval the conjugate points were mostly below 100 km. Fine temporal or spatial variations were observed during one pass; the flux changed by up to a factor of five in a few tenths of a second. (Author)

Descriptors :   *ELECTRON DENSITY), (*AURORAE, (*SCIENTIFIC SATELLITES, AURORAE), ATMOSPHERIC SOUNDING, MEASUREMENT, IONOSPHERE, DIURNAL VARIATIONS, PERIODIC VARIATIONS, ORBITS, ELECTRONS, DETECTORS, UPPER ATMOSPHERE, ENERGY.

Subject Categories : Atmospheric Physics
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE