{
  "@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": "This data set contains hourly, spin-averaged\ncount rates of heavy nuclei, and of particles penetrating the\nanticoincidence sensor, from the IMP8 Cosmic Ray Nuclear Composition\nexperiment of U. Chicago and UNH.  Included are rates of CNO nuclei\nat E.LT.80 MeV/n and E.GT.80 MeV/n, of Z.GT.8 nuclei at \"low\" and \"high\"\nenergies, and of penetrating particles (protons with E.GT.106 MeV,\netc.)",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "downloadURL": "ftps://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/heavies/",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://helio.data.nasa.gov/dataset/IMP8_CRNC_Heavies_PT1H",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://hpde.io/NASA/NumericalData/IMP8/CRNC/Heavies_PT1H",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://omniweb.gsfc.nasa.gov/ftpbrowser/imp_chi_crnc_1h.html",
      "format": "HTML",
      "mediaType": "text/html"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/15min_asci/voldesc.sfd",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/heavies/",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/particles_uchi/hourly/heavies/aareadme.txt",
      "format": "TXT",
      "mediaType": "text/plain"
    }
  ],
  "identifier": "https://doi.org/10.48322/5v3x-mz77",
  "keyword": [
    "energeticparticles"
  ],
  "landingPage": "https://doi.org/10.48322/5v3x-mz77",
  "license": "https://www.usa.gov/government-works",
  "modified": "2026-09-21",
  "programCode": [
    "026:000"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "SPDF"
  },
  "theme": [
    "Heliophysics"
  ],
  "title": "IMP 8 Cosmic Ray Nuclear Composition (CRNC) hourly count rates of heavy nuclei"
}