Accession Number : AD0466638

Title :   LOW-ENERGY PROTON AND ELECTRON EXPERIMENT FOR THE ORBITING GEOPHYSICAL OBSERVATORIES B AND E.

Descriptive Note : Progress rept.,

Corporate Author : IOWA UNIV IOWA CITY

Personal Author(s) : Frank, L. A.

Report Date : JUL 1965

Pagination or Media Count : 34

Abstract : The instrumentation and calibrations of the University of Iowa low-energy proton and electron experiment for the Orbiting Geophysical Laboratories (OGO) B and E are described. The experiment utilized cylindrical curved-plate electrostatic analyzers to provide measurements of the differential energy spectrums of protons and electrons within and in the vicinity of the earth's magnetosphere. Continuous channel multipliers are used to count individual charged particles accepted by the analyzers and provide the instrument with a dynamic range in proton and electron intensities extending from 10 to the 4th power to 10 to the 10th power (cm2-sec-sr)-1 in a given energy bandpass of the electrostatic analyzer. The widths of the energy bandpasses of the electrostatic analyzers are sufficiently wide to cover the entire energy range extending from 90 eV to 70,000 eV (protons and electrons separately) in 14 voltage steps on the curved plates. The four electrostatic analyzers (two analyzers each for protons and electrons covering the above energy range) complete with signal conditioner, high-voltage power supplies, and thermal shell require an average power of 2 watts and an instrumental weight of 6.3 pounds. (Author)

Descriptors :   (*SCIENTIFIC SATELLITES, INSTRUMENTATION), PROTONS, ELECTRONS, UPPER ATMOSPHERE, ELECTROSTATICS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE