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    • ISEE 3 Isotopic Abundance Ratios

    Metadata Updated: April 10, 2026

    This data product consists of a single ASCII file \ncontaining values and their uncertainties for 32 abundance ratios of \nvarious pairs of isotopes of 13 chemical elements (C, O, Ne, Mg, Al, \nSi, Ti, V, Cr, Mn, Fe, Co, Ni). Between this data product and a \ncompanion catalog with isotopic fractions, isotopic composition \ninformation is given for 21 chemical elements. The ratios are based \non 1978-1981 observations of ~50-500 MeV/n cosmic rays by the U. \nChicago cosmic ray experiment on ISEE 3. Each of the ratios is \nlinked in the ASCII file to the publication where its derivation is \ndiscussed.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date March 13, 2026
    Metadata Updated Date April 10, 2026

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 13, 2026
    Metadata Updated Date April 10, 2026
    Publisher NASA Space Physics Data Facility (SPDF) Data Services
    Maintainer
    Identifier /SDE/SPASE_JSON/|eff12dc8d8e533f1e3052609311fdf75
    Data Last Modified 2026-04-06
    Category Heliophysics
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id be83d4e3-88a9-4af4-a68f-78b38a5bdb08
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    License https://www.usa.gov/government-works
    Program Code 026:000
    Source Datajson Identifier True
    Source Hash 197fb40267726a0d24d4c3a5f9bc12c5d08a530e245aaf7248f90cd423c8c8bd
    Source Schema Version 1.1

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