Accession Number : ADA111806

Title :   Analysis of the Ram Effect Observed with the Electron ESA on the S3-2 Satellite.

Descriptive Note : Final rept. Nov 78-Nov 81,

Corporate Author : PANAMETRICS INC WALTHAM MASS

Personal Author(s) : Hanser,Frederick A ; Sellers,Bach

PDF Url : ADA111806

Report Date : Nov 1981

Pagination or Media Count : 17

Abstract : A parallel plate electrostatic analyzer (ESA) to detect 0.08 to 17 keV electrons was launched on the S3-2 satellite in late 1975. Analysis of the low altitude data revealed that the ESA was responding to the neutral atmosphere through a ram effect. The ram effect was confined to attack angles of less than about 30 deg, and was generally present only at the lowest altitudes (250-300 km). By excluding all data with an ESA attack angle of less than 45 deg, completely reliable electron spectra are obtained at all altitudes. (Author)

Descriptors :   *ELECTRON SPECTROSCOPY, *ATMOSPHERES, *PLATES, *SCIENTIFIC SATELLITES, ANGLE OF ATTACK, PAYLOAD, ELECTROSTATIC ANALYZERS, LOW ALTITUDE, PROFILES, PARALLEL ORIENTATION, RELIABILITY, BACKSCATTERING, DEFLECTION, MODELS, OXYGEN, ELECTRON DENSITY, NITROGEN, DETECTORS, HIGH VOLTAGE, ATOMIC PROPERTIES

Subject Categories : Nuclear Physics & Elementary Particle Physics
      Plasma Physics and Magnetohydrodynamics
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE