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Solar wind plasma, 2-D and 3-D distr. fns. p: 150eV - 7keV; e: 10eV-1keV

NSSDCA ID: 1978-079A-01

Mission Name: ISEE 3
Principal Investigator:Dr. John T. Gosling


This experiment was designed to make an integrated study of the nature, origin, and evolution of structure in the interplanetary medium. Also, the thermal state of the interplanetary plasma was studied, unperturbed by the earth's bow shock. Ion velocity distributions were measured by a 135-deg spherical electrostatic analyzer in both two and three dimensions. Step energy resolution for each energy window was 4.2%. Electron velocity distributions were measured by a 90-deg spherical electrostatic analyzer, also in two and three dimensions. The energy window per step for electrons was 10%. Channeltron electron multipliers were used as detectors for each of the analyzers. Solar wind electrons were measured in 15 contiguous channels from 8.5 to 1140 eV. A special photoelectron range of 1.6 to 220 eV could be commanded. Various mixtures of data for two-dimensional and three-dimensional distribution functions could be selected. Ions were measured in 32 channels from 237 eV per charge to 10.7 keV per charge. Various modes were available for basic sweep, search, and tracking of the peak of the distribution. The ion instrument failed to return usable data after February 26, 1980.

Alternate Names

  • ISEE3/Solarwindplasma,2-Dand3-Ddistr_fns_p:150eV-7keV;e:10eV-1keV
  • Solar Wind Plasma
  • urn:nasa:pds:context:instrument:ice.swp

Facts in Brief

Mass: 5.8 kg
Power (avg): 4.7 W

Funding Agency

  • NASA-Office of Space Science Applications (United States)


  • Space Physics: Heliospheric Studies

Additional Information

Questions and comments about this experiment can be directed to: Dr. H. Kent Hills



NameRoleOriginal AffiliationE-mail
Dr. Edward W. Hones, Jr.Other InvestigatorLos Alamos National
Dr. Michael D. MontgomeryOther InvestigatorLos Alamos National Laboratory
Dr. John R. AsbridgeOther InvestigatorLos Alamos National
Dr. William C. FeldmanOther InvestigatorLos Alamos National
Dr. John T. GoslingPrincipal InvestigatorLos Alamos National

Selected References

  • Bame, S. J., et al., ISEE-C solar wind plasma experiment, IEEE Trans. Geosci. Electron., GE-16, No. 3, 160-162, doi:10.1109/TGE.1978.294538, July 1978.
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