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    • NIST Electron Inelastic-Mean-Free-Path Database - SRD 71

    Metadata Updated: September 30, 2025

    The NIST Electron Inelastic-Mean-Free-Path Database provides values of electron inelastic mean free paths (IMFPs) principally for use in surface analysis by Auger-electron spectroscopy and X-ray photoelectron spectroscopy. The database includes IMFPs calculated from experimental optical data and IMFPs measured by elastic-peak electron spectroscopy. If no calculated or measured IMFPs are available for a material of interest, values can be estimated from the predictive IMFP formulae of Tanuma et al. and of Gries. IMFPs are available for electron energies between 50 eV and 10,000 eV although most of the available data are for energies less than 2,000 eV. A critical review of calculated and measured IMFPs has been published [C. J. Powell and A. Jablonski, J. Phys. Chem. Ref. Data 28, 19 (1999)].

    Access & Use Information

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

    Downloads & Resources

    References

    https://www.nist.gov/system/files/documents/srd/SRD71UsersGuideV1-2.pdf
    https://dx.doi.org/10.1063/1.556035

    Dates

    Metadata Created Date November 12, 2020
    Metadata Updated Date September 30, 2025
    Data Update Frequency irregular

    Metadata Source

    Harvested from Commerce Non Spatial Data.json Harvest Source

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date September 30, 2025
    Publisher National Institute of Standards and Technology
    Maintainer
    Identifier ECBCC1C130082ED9E04306570681B10714
    Language en
    Data Last Modified 2010-12-01 00:00:00
    Category Standards:Reference data
    Public Access Level public
    Data Update Frequency irregular
    Bureau Code 006:55
    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 379d7ccd-d918-4142-b5a7-8e1863668918
    Harvest Source Id bce99b55-29c1-47be-b214-b8e71e9180b1
    Harvest Source Title Commerce Non Spatial Data.json Harvest Source
    Homepage URL https://www.nist.gov/srd/nist-standard-reference-database-71
    License https://www.nist.gov/open/license
    Program Code 006:052
    Related Documents https://www.nist.gov/system/files/documents/srd/SRD71UsersGuideV1-2.pdf, https://dx.doi.org/10.1063/1.556035
    Source Datajson Identifier True
    Source Hash c0287c1fa1665d8c91c52ff4a8a3700bd918166734bbab095d55743aa332bfbe
    Source Schema Version 1.1

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