Assuming you have a legitimate .exe or .msi file:
XPSpeak4.1 is a widely used, freeware tool for analyzing X-ray Photoelectron Spectroscopy (XPS) data, specifically designed for peak fitting on Windows systems. While there is no official "white paper" from a commercial developer, its functionality and usage are extensively documented in academic literature and user-created manuals. Key Features and Capabilities
Select your desired background type (Shirley is the most common for transition metals; Linear is often used for simple polymers).
Check the box labeled .
The Ultimate Guide to XPSPEAK 4.1: Features, Installation, and Peak Fitting Tutorial
: While designed for Windows 95/98, it can run on modern Windows versions (10/11) using Compatibility Mode : Typically comes as a file containing a
Accurate background subtraction is crucial for reliable peak fitting. XPSPEAK41 provides both options, enabling precise removal of inelastic background signals. Users can adjust Shirley-type backgrounds and fine-tune parameters for optimal results. xpspeak41 software download
: Look for the "XPSpeak4.1 User's Guide" often distributed as a PDF alongside the software; it provides step-by-step instructions on importing data and setting up peak parameters.
Allows users to fix or bind parameters such as peak position, Full Width at Half Maximum (FWHM), and area ratios (essential for doublet splitting).
Click to introduce a new synthetic curve to the spectrum. Select the Peak Type (e.g., orbitals) to automatically apply theoretical constraints. Adjust the initial Peak Position (BE), FWHM , and Intensity . Assuming you have a legitimate
: Allows users to lock or link peak positions, full width at half maximum (FWHM), and area ratios based on theoretical quantum mechanics (e.g., spin-orbit splitting).
XPSPEAK 4.1 remains one of the most widely used, free software programs for analyzing X-ray Photoelectron Spectroscopy (XPS) data. Despite being legacy software, its lightweight design, straightforward interface, and powerful curve-fitting capabilities make it a staple in materials science and chemistry laboratories worldwide.