XPSpeak 4.1 is a specialized, lightweight Windows freeware designed for visualizing and fitting X-ray photoelectron spectroscopy (XPS) data. Developed by Raymund Kwok, it is widely used in academic and research settings for deconvoluting complex spectra and quantifying chemical states. Download and Installation
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If you are fitting split orbitals (like a 2p3/2 and 2p1/2 doublet), use the tab to fix the area ratio (e.g., 2:1 for p-orbitals, 3:2 for d-orbitals) and the specific binding energy separation. Step 4: Run the Optimization Click Optimize . Instead: The WSU source is highly recommended because
The primary function of the software is to deconvolute complex spectra. Raw XPS data often shows overlapping peaks that represent different chemical states of an element. XPSpeak41 allows users to fit synthetic peaks (using Gaussian, Lorentzian, or a mix of both) to match the raw data, allowing for the separation of these overlapping signals.
Essential for analyzing metallic systems and conductive materials.