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Spherical Electrostatic Ion Trap

NSSDCA ID: 1981-075A-02

Mission Name: IK Bulgaria 1300
Principal Investigator:Dr. Tania Ivanova

Description

The instrumentation consisted of two spherical electrostatic probes. The first was a three-electrode device, with a floating potential on the outer grid, that measured the plasma density fluctuations. The outer diameter of this probe was 60 mm and its optical transparency was 44%. The collector current was measured in the range of 1.E-10 to 1.E-6 A and the outer grid potential was measured. The second probe was a four-electrode (three grids) device with a sawtooth voltage applied to the middle grid that sat on a step of 0, -4, -8, or -12 V, depending on what the potential of the outer floating grid was. The dynamic range of the collector current was 1.E-7 to 1.E-11 broken into four ranges. The first and second derivatives of the ion current were obtained to provide ion temperatures in the range of 500 to 5000 deg K and an ion density of 1.E2 to 1.E6 per cc for each ion species that could be determined. The outer diameter of this probe was 70 mm and its optical transparency was 27%. For more details on this instrument see T. N. Ivanova et al., Adv. Space Res., v. 2, n. 7, pp. 21-25, 1983.

Alternate Names

  • IKBulgaria1300/SphericalElectrostaticIonTrap
  • Ion Trap - Spherical Electrostatic Probe

Funding Agency

  • Bulgarian Academy of Sciences (Bulgaria)

Discipline

  • Space Physics: Ionospheric Studies

Additional Information

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

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Gennady L. GdalevichOther InvestigatorInstitut Kosmicheskich Issledovaniya (IKI)
Dr. Trifon SamardjievOther InvestigatorCentral Laboratory for Space Research, Bulgarian Academy of Science
Dr. S. HalovaOther InvestigatorCentral Laboratory for Space Research, Bulgarian Academy of Science
Dr. Tania IvanovaPrincipal InvestigatorCentral Laboratory for Space Research, Bulgarian Academy of Sciencesvetsg@bgearn.acad.bg
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