Dear Sir,

please be careful when using non-XPS related software for peak fitting analysis.

In case of C, N or O, peak fitting with simple Gaussian, Lorentzian may work. However, for metals, the line shape can strongly deviate from those

symmetric profiles and the use of, e.g., the so-called Mahan or Doniac-Sunjic

line shapes will be necessary to get reliable results.

Please look for, e.g., CASA XPS software. This should also provide appropriate

background correction (e.g. Shirley).

Kind regards anfd good luck,

FM

Dear Sir,

please be careful when using non-XPS related software for peak fitting analysis.

In case of C, N or O, peak fitting with simple Gaussian, Lorentzian may work. However, for metals, the line shape can strongly deviate from those

symmetric profiles and the use of, e.g., the so-called Mahan or Doniac-Sunjic

line shapes will be necessary to get reliable results.

Please look for, e.g., CASA XPS software. This should also provide appropriate

background correction (e.g. Shirley).

Kind regards anfd good luck,

FM

I agree with Reza Younesi that CasaXPS and IGORpro are the best. I typically do all my deconvolution in CasaXPS and transfer the data to IGORpro.

I was checking the program CASA-XPS, only that my date bases are in format .TXT and .SSF. Therefor, when I want to convert these formats to .VMS (Vamas files), there is a lecture error. Please, someone can help me. Thanks!

Dear Martinez,

you strictly should not use origin or any other software for peak fitting of XPS spectra.

Relative sensitivity factors (RSF) of each element should be considered while analysing the spectra.Trial version of CASA XPS software is available . But your file format must be in VAMAS (.VMS). Better you check with the person who helped to take XPS spectra for analysis also. Good luck.

Thanks Yellareswara Rao K!

Dear Sebastián Feliu

I`m going to found the XPSpeak4.1 program. Only I have problems whit the download. Please. Do you have the link for free download? Thanks!

Dear John Newberg.

I'm sure that the CASA XPS is very good. The problem is its cost. However, is a good contribution. Best regards and thanks!

If you have casaXPS software then following video link description can help you converting your file into VAMAS format.

http://www.casaxps.com/cam7/BeginnersGuide/Convert/Convert.html

FWIW, the Mahan or Doniac-Sunjic peak shapes can be readily programmed in Igor Pro, as well as the Shirley or Tougaard baselines.

Also, peak fitting and peak deconvolution are two very different operations. We are talking about peak fitting, not peak deconvolution.

Several years ago I wrote an Igor procedure for XPS data analysis. It used a Doniach-Sunijc lineshape convoluted (really convoluted!) with a gaussian profile to take into account both instrumental and thermal broadening. I guess you could do the same in any non xps-specific programming environment.

Giorgio, are you sure you used the DS line shape for thermal reasons? It is meant to mimick the asymmetry of PE peaks due to (inelastic) electron hole excitations in metals !?!

I have my dataset in .VGD format. It is readable in Avanatage software. I do not know how to convert .VGD to ASCII and then to .vamas. the link posted by mahreen tells us about converting I guess ASCII to VAMAS. can anybody help please?

Thanx

Kai, as I wrote, we use a convolution of the DS lineshape with a gaussian. As you correctly say, lifetime broadening and plasmom creation are taken care of by the former, thermal broadening and instrumental resolution by the latter.

For the definition of convolution one may refer to http://tutorial.math.lamar.edu/Classes/DE/ConvolutionIntegrals.aspx

Sometimes people use the word "convolution" with a different meaning. I use the correct mathematical meaning!

Very interesting ,I will go through to find the best for our results

Dear Jibran:

The Avantage Software (from Thermo package) comes with an small program to convert the ".vgd" data ".avg" data.

The ".avg" data can be opened by the CasaXPS sovtware, which finally converts the data to ".vms" format.

The small program is called "DataSpace_BatchDump.exe", and the person who provide to you the XPS data, may convert your ".vgd " data to ". avg" format .

These are the CasaXPS instructions to manage the ".vgd" files obtained from Avantage software

The VG Avantage binary files must be converted via an Avantage utility program (DataSpace_BatchDump.exe) to ASCII equivalent files. These ASCII files are created with the file extension .avg and can be converted to ISO 14976 (VAMAS) format using the Convert to VAMAS dialog window:

Using the VG utility program DataSpace_BatchDump.exe, convert all the .vgd binary files for an experiment to .avg ASCII files.

Select the Convert to VAMAS dialog window in CasaXPS either using the toolbar button or via the Convert menu item on the File menu.

Move to the directory containing the .avg ASCII files; the DataSpace_BatchDump.exe program offers the user the choice of where the ASCII files should be created.

Enter a name for the new VAMAS file using the file extension .avg and press the Open button. For example, if you wish to call your new file sample001.vms, then you should enter sample001.avg into the file name field on the Convert to VAMAS file dialog window. Each .avg file found in the current directory will be read and entered into the new VAMAS file named sample001.vms.

I hope it helps

Regards

Hello everyone

To the user above who used XPSpeak41. I have fitted data on XPSpeak41 software but when i try to export the spectrum (in .dat format), it only exports the raw spectrum but not the fitted curves. I tried plotting the .dat file in origin but it only shows raw spectrum as i said above.. any help in this regard would be highly appreciated if anyone knows how to save the fitted curves from XPSpeak41? 

For curve or peak fitting of XPS spectra, I recommend Igor Pro over Origin. See especially this link ...

http://www.igorexchange.com/project/XPStools

The CasaXPS software is the best software to deconvolute the XPS peaks.

Download CasaXPS here: http://www.casaxps.com/

Follow this video: http://bit.ly/2swDDEx

In addition, you can use Origin Software to deconvolute the XPS peaks. But it does not recommend.

Follow this video: http://bit.ly/2swDZel