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Solid State Detectors

NSSDCA ID: 1967-040A-06

Mission Name: Vela 4A
Principal Investigator:Dr. Sidney Singer

Description

The purpose of this experiment was to study the intensity, spatial distribution, time variations, and energy spectra of the electrons in the transition region and in the tail of the earth's magnetosphere. The sensor consisted of a gold surface-barrier semiconductor detector. This detector was shielded from sunlight by two layers of nickel foil. The energy loss in these foils by electrons with energy greater than about 40 Kev was almost negligible. The instrument responded to electrons between 30 and 700 KeV and protons between 180 and 570 KeV. The energy spectrum was measured in steps by successive stepping of a pulse height analyzer giving seven points on the integral energy spectrum. Electrons and protons could be distinguished by comparision of this detector and the Geiger-Mueller experiment (NSSDC 67-040A-07) count rates. This experiment worked well over the period of major data coverage of the satellite.

Alternate Names

  • Vela4A/SolidStateDetectors

Discipline

  • Space Physics: Magnetospheric Studies

Additional Information

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

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Sidney SingerPrincipal InvestigatorLos Alamos National Laboratorysid@lanl.gov
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