{
  "Spase": {
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xmlns": "http://www.spase-group.org/data/schema",
    "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2.4.1.xsd",
    "Version": "2.4.1",
    "Instrument": {
      "ResourceID": "spase://CNES/Instrument/CDPP-AMDA/MAVEN/NGIMS",
      "ResourceHeader": {
        "ResourceName": "NGIMS",
        "AlternateName": "Neutral Gas and Ion Mass Spectrometer",
        "ReleaseDate": "2017-03-01T22:37:00Z",
        "Description": "The Neutral Gas and Ion Mass Spectrometer (NGIMS) measures the composition and isotopes of thermal neutrals and ions.\n        \n      Goals:\n    *Determine structure and variation of neutral atmosphere and ionosphere with altitude over the globe from the homopause to above the exobase where the neutral gas can escape\n    *Provide a basis for the study of thermospheric energetics, transport, circulation and formation of the ionosphere\n    *Reveal the effects of lower atmospheric effects on the composition of the upper atmosphere and escape\n\n   Observations:\n    *Basic structure of the upper atmosphere (major species He, N, O, CO, N2, NO, O2, Ar, and CO2) and ionosphere from the homopause to above the exobase\n    *Stable isotope ratios, and variations\n\n Technical details and heritage:\n    *Quadrupole Mass Spectrometer with open and closed sources\n    *Open source: neutrals and ions\n    *Closed source: non-reactive neutrals\n    *Mass Range: 2 – 150 Da\n    *Mass Resolution: 1 Da\n    *Modes: scan entire spectra or adapt to fixed masses\n    *Sensitivity: 10-2 (counts/s)/(particles/cm-3)\n    *Heritage from Galileo GPMS, Pioneer Venus ONMS, CASSINI INMS, Contour NGIMS   \n   ",
        "Contact": {
          "PersonID": "spase://SMWG/Person/Paul.R.Mahaffy",
          "Role": "PrincipalInvestigator"
        },
        "InformationURL": {
          "Name": "NGIMS web page, Summary sheet ",
          "URL": "http://lasp.colorado.edu/home/maven/science/instrument-package/ngims/"
        }
      },
      "InstrumentType": "MassSpectrometer",
      "InvestigationName": "MAVEN Neutral Gas and Ion Mass Spectrometer Investigation",
      "OperatingSpan": {
        "StartDate": "2013-11-18T13:28:00",
        "Note": "Mars arrival : 2014-09-28T19:24:00"
      },
      "ObservatoryID": "spase://CNES/Observatory/CDPP-AMDA/MAVEN"
    }
  }
}