Often used for manual deconvolution, offering a familiar interface for those already using it for graphing.
A free, open-source alternative that handles more file types (VAMAS, ASCII) and supports asymmetric peak fitting (LA, Doniac Sunjic).
is a specialized, lightweight Windows application designed for visualizing and fitting X-ray Photoelectron Spectroscopy (XPS) data. Originally developed by Raymund Kwok, it remains a popular freeware choice for researchers and students due to its straightforward interface and essential fitting capabilities. Core Features for Peak Analysis xps peak fit 41 new download
Educational archives like Washington State University or the University of Warwick often provide the 3.3MB zipped file.
Because XPSPeak 4.1 is older software, it is often hosted on university or archive sites rather than a single official commercial page. Often used for manual deconvolution, offering a familiar
Advanced users can fit different XPS regions at the same time to ensure consistency across the entire spectrum. How to Download and Install XPSPeak 4.1
Allows users to define peaks using Gaussian, Lorentzian, and mixed models to deconvolute overlapping signals. Originally developed by Raymund Kwok, it remains a
While XPSPeak 4.1 is valued for its simplicity, some researchers now prefer more modern or regularly updated tools:
Helps determine chemical states by refining peak positions, heights, and widths through least-squares fitting.