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Search-Coil Magnetometer

NSSDCA ID: 1960-001A-02

Mission Name: Pioneer 5
Principal Investigator:Mr. Eugene W. Greenstadt


This search coil magnetometer, which was similar to those flown on Pioneer 1 and Explorer 6, was designed to study the interplanetary magnetic field. The detector consisted of a single search coil that was mounted on the spacecraft so that it measured the magnetic field perpendicular to the spacecraft spin axis. The magnetometer could measure fields from 1 microgauss to 12 milligauss. No inflight calibration was provided for. The experiment had both digital and analog outputs. The magnetometer amplitude and phase were sampled continuously for analog transmission and intermittently (every 96, 12, and 1.5 s, depending on satellite bit rate) for digital transmission. Approximately 21,000 digital readings of the magnetic field amplitude were obtained. The last data were taken on May 6, 1960. However, no information was obtained on the phase angle of the field about the spin axis. See Coleman, J. Geophys. Res., v. 69, p. 3051, 1964, for further details.

Alternate Names

  • Pioneer5/Search-CoilMagnetometer


  • Space Physics: Heliospheric Studies

Additional Information

Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. Charles P. SonettOther InvestigatorUniversity of Arizona
Dr. Darrell L. JudgeOther InvestigatorUniversity of Southern
Mr. Eugene W. GreenstadtPrincipal InvestigatorTRW Systems Group
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