Once you have secured the legitimate installer (typically a .exe file named XPSPF41_Setup.exe ), follow these steps:
Select the optimization algorithm (usually Levenberg-Marquardt).
Convert your raw XPS data from instrument-specific formats (such as VAMAS .vms , .txt , or .csv ) into an ASCII two-column format containing Binding Energy (eV) and Intensity (Counts).
Select the appropriate background type (Shirley is recommended for most routine polymer and oxide analyses) and click . Peak Addition and Constraint Setting
: Users can lock or link parameters like peak position, Full Width at Half Maximum (FWHM), and peak area to ensure physical consistency. Advanced Tools : Features include the ability to combine 2 p sub 3 / 2 end-sub 2 p sub 1 / 2 end-sub peaks and fit multiple spectral regions simultaneously. ResearchGate Download and Installation xps peak fit 41 new download
What (e.g., C 1s, Ti 2p, O 1s) are you analyzing?
: It can process different XPS regions simultaneously, helping to reduce overall data processing time. Installation and Workflow
Because XPS software is often licensed, avoid “cracked” or unauthorized download sites—they may contain malware or produce invalid scientific results.
A fit is only as good as its background. Modern software moves beyond basic linear baselines to offer: Once you have secured the legitimate installer (typically a
Ready to start fitting? Download your copy and refer to this XPSPEAK User Guide for a deep dive into the math behind the peaks.
Keep FWHM values for chemically similar peaks within a tight range (typically 1.0 to 1.8 eV for high-resolution scans). Spin-Orbit Splitting: If fitting orbitals (like Ti
While is a nostalgic and simple tool for quick checks, it is technically obsolete and can be unsafe to download from random websites. If you are doing publishable research, moving to CasaXPS or Unifit will save you time and provide more robust fitting models (like Active Asymmetric lineshapes) that version 4.1 lacks.
This guide covers the safe ways to access the software and provides a tutorial on how to use it effectively for XPS analysis. Peak Addition and Constraint Setting : Users can
What (like Origin or Excel) do you plan to use for your final figures?
Often used for manual deconvolution, offering a familiar interface for those already using it for graphing.
Select the Gaussian-Lorentzian percentage (often set between 20% to 50% Lorentzian character for conventional lab-scale XPS systems).