Dear researchers I used XPS PEAK 4.1 software to elucidate the W4f peaks from Ti3p peak and evolved W 4f peaks but their doublet shape is not revealed. Then I came to know that Igor Pro is the best soft ware to do so. I downloaded it from "http://igor-pro.software.informer.com/download/ " but I dont know how to use it and when I had a glance at its manual I found that the instructions are too extensive to follow. Right now I have the data of the high resolution XPS peaks is in form of "*.txt", "vgd", "ASCII" files.
The requirements to get accurate deconvolution of those peaks are mentioned in the paper titled "Study of the Reduction Behavior of W/Ti02
Catalysts by XPS using Curve Fitting, Deconvolution and Factor Analysis"-----"In order to achieve a successful deconvolution, each spectrum must be pretreated. Pretreatment includes background removal and spectral smoothing. The backgrounds were removed using a Shirley-type integral and spectral smoothing was carried out using a cubic All data analysis programs (GOOGLY Software) were written in house by A.P. The Jansson algorithm implements an iterative type of procedure that can be controlled interactively by a visual evaluation or by monitoring the residual variance between the original data and the reconstructed data (i.e. the convolution of the broadening function and the current deconvoluted spectrum). The most important variable in any deconvolution is the broadening function. In the present case the broadening function was chosen to be a symmetric Voigt function" with 20% Lorentzian character. The width chosen happened to be slightly narrower than those used in curve fitting (see below) the spectrum of interest. In our case the width was selected to be 1.9 eV. This allows for maximal deconvolution while not losing components because of 'over deconvoluting'.
Now I need to follow the above instructions using Igor Pro software. Hence I request the experts of this field to guide me. Thanking you for your valuable suggestions.
you probably will need some add-ons (like data reduction software), however it seems that you already have done data reduction, now you will need to use some models depending on your system and do the fittings
Dear Alok Goel ....thank you very much for your concern...I am very new to Igor pro and casaXPS thoughI know XPSPEAK 4.1. However this software is not use full for me to follow all the conditions of Non Linear least square fitting. So planning to use igor pro or casa XPS this is my gmail id.. [email protected]
Dear Zaidi Embong Thank you so much for your suggestion...I tried to download casaXPS from google after that when I opened, it is asking license and password. So could not use it. I now have a doubt is that soft ware not a freeware? If I got that software I have to try with CasaXPS also for confirmation of my results. Can you please guide me.
You can ask me anytime...yup..of course you need a licence...you need to contact Dr. Neal Farley...I have some experience in using CasaXPS..not bad...the result of xps deconvolution is superb K. Kiran
CasaXPs would be the best option. however if wsh to use Igor Pro, there are many macros out there to help
I know of some from Warwick Physics deptarment whihc have had good feeback from users I know. (http://www2.warwick.ac.uk/fac/sci/physics/research/condensedmatt/surface/people/james_mudd/igor/)
Other resources you may be able to use:
http://franklin.chm.colostate.edu/bap/People_Pages/BengtSite/igor.htm
Igor Pro is not designed out of the box to fit XPS spectra. It is a more general package. CasaXPS is designed specifically to analyze XPS. Both require license agreements.
Regardless of what package you use, have a long path ahead when you are starting from zero.
In the meantime, can you please provide a DOI to the journal citation.
One more thing, CasaXPS is also capable to convert the data from any system to Vamas format. (example: *.dset to Vamas format)....Vamas is universal format...some XPS instrument has their own data format...This CasaXPS is design especially for Kratos XPS system but in some cases, it also capable for other XPS system such as Thermo or Omicron Nanotech system...
- Badges
- Science topic
- Similar topics
- Mathematical Sciences
- Statistics
- Statistical Software