BackForwardInstrument:  SKL-particles 

Instrument details
Acronym SKL-particles
Full name Solar Cosmic-ray Spectrometer Complex - particles
Purpose Measurement of charged and neutral components of energetic particle fluxes (energy spectra and elemental, isotopic and charge composition)
Short description Assemblage of three units to measure: 1) fluxes of nuclei with Z ranging from 1 to 20 with energy 1.5-19 MeV/n (for 4He) and 3.7-4.6 MeV/n (for 20Ne); 2) cosmic rays by measuring spectra of electrons (0.5-12 MeV), protons (1-200 MeV) and alpha-particles (120-240 MeV); and 3) neutrons (> 30 MeV), protons (11-108 MeV and 200-500 MeV), and other cosmic rays in the range 1-500 MeV
Background Consolidated technology
Scanning Technique Sun ponting from a LEO high-inclination drifting orbit
Resolution N/A (full disk)
Coverage / Cycle Full solar disk near continuous
Mass 63 kg Power 25 W Data Rate

 

Providing Agency Roscosmos
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1994 to 2005-12-06
Last update: 2017-06-05
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Solar and space environment monitors
  • Energetic particle spectrometer
Mission objectives
Primary mission objectives
  • Solar wind density
  • Solar wind temperature
  • Solar wind velocity
Secondary mission objectives
  • Alpha particles differential directional flux
  • Electron differential directional flux
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Tentative Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
VariableRelevance for measuring this variableOperational limitationsExplanation
Electron differential directional flux4 - fairNo specific limitation.Sun pointing, high energy (over 400 keV)
Proton differential directional flux4 - fairNo specific limitation.Sun pointing, medium and high energy (over 40 to over 1000 keV)
Alpha particles differential directional flux1 - primaryNo specific limitation.Sun-pointing. Low-medium energy range (<10 up to 100 MeV/n)
Solar wind density1 - primaryNo specific limitation.Solar viewing. Infrerred from Proton. Electron and Alpha-particle spectroscopy
Solar wind temperature1 - primaryNo specific limitation.Solar viewing. Infrerred from Proton. Electron and Alpha-particle spectroscopy
Solar wind velocity1 - primaryNo specific limitation.Solar viewing. Infrerred from Proton. Electron and Alpha-particle spectroscopy
Heavy ion flux energy and mass spectrum3 - highNo specific limitation.Sun-pointing. Low-medium energy range (<10 up to 100 MeV/n)
Cosmic ray neutron flux spectrum2 - very highNo specific limitation.Solar. Extended energy range (<10 to >100 MeV/n)