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Two-component Current Langmuir Slit Probe, LSP

NSSDCA ID: 1995-039F-09

Mission Name: Magion 4
Principal Investigator:Dr. Sergey Savin


The Langmuire Slit Probe is used to measure two components of the current density in space. The input signal frequency range is 0.3 Hz to 50 kHz. The output 1 has a linear characteristic over the whole frequency range; in output 2 the characteristic is proportional to the frequency in the range 15 to 1000 Hz.

The noise threshold normalized to the input is 10^-13 A/cm^2. The dynamical range of the input signal variations is 80 dB for the first output. The dynamical range is measured from the noise level for a given frequency band to the maximum signal on the detector input. The gain is 70 +/- 10 for output 1 and 3500 +/- 500 for output 2. To calculate the transmission coefficient Ct for a parameter under measurement one should multiply these values by 42.45 V m/kA cm^2.

Alternate Names

  • Magion4/Two-componentCurrentLangmuirSlitProbe,LSP

Funding Agencies

  • Unknown (Czech Republic)
  • Unknown (Russia)
  • Unknown (Ukraine)


  • Space Physics: Magnetospheric Studies

Additional Information

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



NameRoleOriginal AffiliationE-mail
Dr. Jan I. SmilauerCo-InvestigatorAcademy of Sciences of the Czech
Dr. Stanislav I. KlimovCo-InvestigatorInstitut Kosmicheskich Issledovaniya (IKI)
Dr. Vladimir TruhlikCo-InvestigatorAcademy of Sciences of the Czech
Dr. Sergey SavinPrincipal InvestigatorRussian Academy of
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