March 12th, 2008, 03:21 PM

Hello all.
This is a bit of a long shot, but what the hell.
I'm a condensed matter research physicist and use x-ray photoelectron spectroscopy (XPS) a fair amount. There's a programme for Windows called XPSpeak which allows me to fit semi-Voigt functions (convolved Gaussian-Lorentzian lineshapes) to experimental spectra, as well as doing background subtractions. I've yet to find anything similar in Linux, and am hoping that someone on here might know of something I could use? (XPSpeak is the only Windows programme that I *need* to use... getting an open source programme to do these bits would mean I can do everything in Ubuntu... hurray!)
The other problem I have with XPS data is I'm going to be using some theoretical calculations (some of my own, some in collaboration with Cambridge university) of the valence band electron density-of-states to compare with experimental XPS data. In order to do this I will need to convolve the calculated data with Gaussians and Lorentzians. Does anyone have any suggestions how to do that? I was thinking about writing something in Scilab, but if anyone has any programme that can do that for me, I'd be hugely appreciative. :)