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XFIT - an Interactive EXAFSAnalysis Program.

P J Ellis, H C Freeman

    Journal of Synchrotron Radiation
    |July 1, 1995
    PubMed
    Summary
    This summary is machine-generated.

    XFIT is a new program for analyzing X-ray absorption fine structure (XAFS) data. It offers advanced features like simultaneous data set refinement and Monte Carlo error analysis for accurate structural insights.

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    Area of Science:

    • Materials Science
    • Solid-State Physics
    • Chemistry

    Background:

    • X-ray absorption fine structure (XAFS) spectroscopy is a powerful technique for determining local atomic structure.
    • Existing software packages often lack integrated features for comprehensive XAFS analysis.

    Purpose of the Study:

    • To introduce XFIT, a user-friendly program for XAFS data analysis.
    • To provide a unified platform with advanced functionalities for ab initio and empirical EXAFS calculations.

    Main Methods:

    • Incorporates ab initio EXAFS calculations using FEFF4.06/6.01 and empirical calculations.
    • Features include polarization effects, Fourier filtering, constraints, and restraints.
    • Introduces simultaneous refinement for multiple datasets and absorber sites, plus Monte Carlo error analysis.

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    Main Results:

    • XFIT successfully integrates diverse XAFS analysis tools into a single package.
    • Demonstrates enhanced capabilities for analyzing complex systems, including mixtures and diffraction anomalous fine structure (DAFS) data.

    Conclusions:

    • XFIT offers a comprehensive and efficient solution for XAFS data analysis.
    • The program's advanced features facilitate more robust and accurate determination of local atomic structures.