XPSPeak 4.1 is a free, widely used software for fitting X-ray photoelectron spectroscopy (XPS) spectra. Developed by Raymund Kwok, it remains a staple for researchers because it handles specialized tasks like Shirley backgrounds and Gaussian-Lorentzian peak fitting that general tools like Origin cannot easily manage. How to Download and Install
Determine Chemical States: Identifying the oxidation state of elements by fitting experimental envelopes into individual components. xpspeak41 software download
Ensure the XPSPEAK41.exe icon (a red peak with two blue deconvolution peaks) and all supporting data files are in the same folder. XPSPeak 4
If you absolutely need XPSpeak41 specifically (e.g., a niche mode it supports), ask on RadioReference forums or Reddit r/RTLSDR – someone may have a clean copy and can share a SHA-256 hash. Ensure the XPSPEAK41
Right-click and "Extract" the contents into a new dedicated folder.
Peak Type: Usually a combination of Gaussian and Lorentzian (SGL).