{
  "@type": "dcat:Dataset",
  "accessLevel": "public",
  "bureauCode": [
    "026:00"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "NASA Space Physics Data Facility",
    "hasEmail": "mailto:NASA-SPDF-Support@nasa.onmicrosoft.com"
  },
  "description": "The data include Wind STICS 3-minute density (0th moment) and mean value of the energy distribution (1st moment), together with their statistical errors, for selected ion species using triple coincidence (H+, He+, He2+, C5+, O+, O6+, and Fe10+) and double coincidence (H+, He+, He2+, O+, O6+) measurements in the magnetosphere. For details, see https://spdf.gsfc.nasa.gov/pub/data/wind/documents/wind_stics_lv2_release_notes_revD.pdf.\nThe Suprathermal Ion Composition Spectrometer (STICS) is a time of flight (TOF) plasma mass spectrometer, capable of identifying mass and mass per charge for incident ions up to 200 keV/e. It uses an electrostatic analyzer to admit ions of a particular energy per charge (E/Q) into the TOF chamber. The E/Q voltage is stepped through 32 values, sitting at each value for approximately 24 sec., to measure ions over the full E/Q range of 6 - 200 keV/e. Ions then pass through a carbon foil and TOF chamber, before finally impacting on a solid-state detector (SSD) for energy measurement. STICS combines these three measurements of E/Q, TOF and residual energy, producing PHA words. This triple-coincidence technique greatly improves the signal to noise ratio in the data. Measurements of E/Q and TOF without residual energy also produce PHA words. These double-coincidence measurements are characterized by better statistics since ions whose energy does not allow them to be registered by the SSD can still be counted in double-coincidence measurements. However, ion identification in double-coincidence measurements are limited to a select number of ions that are well separated in E/Q - TOF space.  The STICS instrument provides full 3D velocity distribution functions, through a combination of multiple telescopes and spacecraft spin. The instrument includes 3 separate TOF telescopes that view 3 separate latitude sectors, as shown in Figure 1 (https://spdf.gsfc.nasa.gov/pub/data/wind/documents/wind_stics_lv2_release_notes_revD.pdf). In addition, the WIND spacecraft spins, allowing the 3 telescopes to trace out a nearly 4π steradian viewing area. The longitudinal sectors are shown in Figure 2. The solar direction is in sectors 8-10 while the earthward direction is in sectors 0-2.",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "downloadURL": "ftps://spdf.gsfc.nasa.gov/pub/data/wind/sms/l2/stics_cdf/3min_nvt_magnetosphere/",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=WI_L2_3MIN_SMS-STICS-NVT-MAGNETOSPHERE&index=sp_phys",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://cdaweb.gsfc.nasa.gov/hapi",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://helio.data.nasa.gov/dataset/Wind_SMS_STICS_Moments_Level2_Magnetosphere_PT3M",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://hpde.io/NASA/NumericalData/Wind/SMS/STICS/Moments/Level2/Magnetosphere/PT3M",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://space.umd.edu/wind/",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://spdf.gsfc.nasa.gov/pub/data/wind/documents/wind_stics_lv2_release_notes_revD.pdf",
      "format": "PDF",
      "mediaType": "application/pdf"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://spdf.gsfc.nasa.gov/pub/data/wind/sms/l2/stics_cdf/3min_nvt_magnetosphere/",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    }
  ],
  "identifier": "https://doi.org/10.48322/wnzt-eh29",
  "keyword": [
    "ioncomposition"
  ],
  "landingPage": "https://doi.org/10.48322/wnzt-eh29",
  "license": "https://www.usa.gov/government-works",
  "modified": "2026-09-08",
  "programCode": [
    "026:000"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "CDAWeb"
  },
  "theme": [
    "Heliophysics"
  ],
  "title": "Wind SMS Suite SupraThermal Ion Composition Spectrometer (SMS/STICS) Ion Moments, Level 2 (L2), 3-minute Data in Magnetosphere"
}