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

<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/baf05da4-8d5e-40cd-b1ae-d71210e833e6> .

<https://gcmd.earthdata.nasa.gov/kms/concept/baf05da4-8d5e-40cd-b1ae-d71210e833e6>
  ns0:altLabel [ ] ;
  skos:definition """[Source: National Space Science Data Center, http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1977-044A-05 ]

The instrument consisted of one spherical (SEA) and one planar (PEA) electrostatic analyzer. The SEA provided measurements of electron densities from 10 to 1.E6/cubic cm in the temperature range from 200 to 15,000 deg k. The PEA measured ion temperatures in the same range as well as the average ion mass over the range 1 to 35 u. The PEA was oriented in the direction of the positive spacecraft velocity vector, while the SEA was oriented at right angles to this direction and away from the sun to minimize the effect of photoelectrons. The device also provided a measurement of the spacecraft potential.


Group: Instrument_Details
   Entry_ID: SSI/E
   Group: Instrument_Identification
      Instrument_Category: Solar/Space Observing Instruments
      Instrument_Class: Particle Detectors
      Short_Name: SSI/E
      Long_Name: Ionospheric Plasma Monitor (SSI/E)
   End_Group
   Group: Associated_Platforms
      Short_Name: DMSP 5D-2/F7
      Short_Name: DMSP 5D-1/F2
      Short_Name: DMSP 5D-1/F4
   End_Group
   Online_Resource: http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1977-044A-05
   Creation_Date: 2008-09-25
   Group: Instrument_Logistics
      Instrument_Owner: United States Air Force
   End_Group
End_Group"""@en ;
  skos:prefLabel "SSI/E"@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 .