BackForwardInstrument:  ERNE 

Instrument details
Acronym ERNE
Full name Energetic and Relativistic Nuclei and Electron experiment
Purpose To detect charged particles in the solar atmosphere produced in various solar energy release processes
Short description Assemblage of sensors to measure 1) electrons to iron species of energy from 60 keV/particle to 500 MeV/nucleon; 2) protons in the range 0.06-5 MeV/proton; 3) elecrons in the range 0.15-5 MeV and H and He in the range 4-53 MeV/nucleon
Background Part of a package of instruments to observe the solar atmosphere
Scanning Technique Interplanetary space from the L1 Lagrange libration point
Resolution N/A
Coverage / Cycle Nearly full interplanetary space, nearly continuous
Mass Power Data Rate

 

Providing Agency ESA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1996 to ≥2020
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
  • Alpha particles differential directional flux
  • Electron differential directional flux
  • Heavy ion flux energy and mass spectrum
  • Proton differential directional flux
Secondary mission objectives
  • Solar wind density
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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 flux3 - highNo specific limitation.Interplanetary space, medium and high energy (over 40 to over 400 keV)
Proton differential directional flux3 - highNo specific limitation.Interplanetary space, medium and high energy (over 40 to over 1000 keV)
Alpha particles differential directional flux2 - very highNo specific limitation.Interplanetary space. Low-medium energy range (<10 up to 100 MeV/n)
Solar wind density1 - primaryNo specific limitation.Interplanetary space. Infrerred from Proton. Electron and Alpha-particle spectroscopy
Solar wind temperature1 - primaryNo specific limitation.Interplanetary space. Infrerred from Proton. Electron and Alpha-particle spectroscopy
Solar wind velocity1 - primaryNo specific limitation.Interplanetary space. Infrerred from Proton. Electron and Alpha-particle spectroscopy
Heavy ion flux energy and mass spectrum4 - fairNo specific limitation.Interplanetary space. Extended energy range (<10 to >100 MeV/n)