@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/2c28b055-3ee0-4f63-8567-9bbef6655564>
  ns0:altLabel [ ] ;
  skos:definition """[Source: National Space Science Data Center, http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1990-105A-04 ]

The purpose of the precipitating electron/ion spectrometer, SSJ/4, is to measure fluxes and energies of electrons and ions precipitated into the upper atmosphere. Particles are separated by an electrostatic analyzer into 20 energy bands from 30 eV to 30 keV: (1) 10 high-energy levels, 0.948, 1.39, 2.04, 3.00, 4.40, 6.46, 9.48, 13.92, 20.44 and 30.00 keV; and (2) 10 low-energy levels, 30.0, 44.0, 64.6, 94.9, 139.2, 204.4, 300, 440, 646, and 948 eV. Channeltrons are used to count the impinging electrons and ions in each energy band.


Group: Instrument_Details
   Entry_ID: SSJ/4
   Group: Instrument_Identification
      Instrument_Category: Solar/Space Observing Instruments
      Instrument_Class: Particle Detectors
      Short_Name: SSJ/4
      Long_Name: Precipitating Electron/Ion Spectrometer
   End_Group
   Group: Associated_Platforms
      Short_Name: DMSP 5D-2/F7
      Short_Name: DMSP 5D-2/F8
      Short_Name: DMSP 5D-2/F9
      Short_Name: DMSP 5D-2/F10
      Short_Name: DMSP 5D-2/F11
      Short_Name: DMSP 5D-2/F12
      Short_Name: DMSP 5D-2/F13
      Short_Name: DMSP 5D-2/F14
      Short_Name: DMSP 5D-3/F15
   End_Group
   Online_Resource: http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1990-105A-04
   Group: Instrument_Logistics
      Instrument_Owner: Department of Defense-Department of the Air Force (United States)
   End_Group
End_Group"""@en ;
  skos:prefLabel "SSJ/4"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/5f5e4f2c-61b7-4694-8680-3fc5799f6171> ;
  a skos:Concept .

<https://gcmd.earthdata.nasa.gov/kms/concept/5f5e4f2c-61b7-4694-8680-3fc5799f6171>
  skos:prefLabel "Particle Detectors"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/2c28b055-3ee0-4f63-8567-9bbef6655564> .