What is Xps: Definition and 15 Discussions

Dell XPS ("eXtreme Performance System") is a line of consumer-oriented high-end laptop and desktop computers manufactured by Dell.

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  1. D

    Which laptop? Dell XPS 13 vs MBP 13

    I've had this MBP for 7 years now and it's done everything I could've asked of it. Things are starting to slow down now though, and small tasks are taking a good amount of time. I figured with my FAFSA money I would get a new laptop. I'm looking at the Dell XPS 13 and the MBP 13. I've been...
  2. Montserrat Crespo

    Getting Started with XPS Peak Fitting: Questions and Answers

    Hi, guys. I'm beginning to fit XPS peaks from a environmental measurement but, as I'm unfamiliar with the exact process I have a lot of doubts. I have solved some of them using the info in http://xpssimplified.com/periodictable.php and in the XPS manual from Moulder and Stickle but I'm not...
  3. D

    Goodness of fit, Residual STD, chi square

    Homework Statement Hello, I am using CasaXPS to model synthetic peak models for X-ray photoelectron spectroscopy data. I am fitting. The software has a lot of manuals online but they do not explain how they yield a Residual Standard Deviation, after each fit iteration. Most software use...
  4. D

    A About X-ray Photoelectron Spectroscopy

    Hello, I am trying to create peak models for some XPS spectra. I have a decent intuition of the chemistry of the samples, and I obtain really good residual standard deviation values for the modeled data; however, some of the FWHM of the modeled oxidized species (C and P) on the narrow scans are...
  5. K

    I with an old VGA Smart-IQ+ Mass spectrometer

    I work at a university and we recently had an XPS donated with a mass spec attachment. It is an older instrument that we would love to get working due to the high resolution detector and in situ reduction chamber. We are having issues getting the mass spec to communicate with the gassworks...
  6. C

    Validity of the Pauling Scale of Electronegativity?

    I propose the Pauling Scale is not valid in all circumstances, and other scales of electronegativity would do better to predict the behavior of electron density in molecules: Electronegativity seems to be poorly defined for such a widely used chemical property: a 'tendency' of an atom or...
  7. R

    The difference between Auger Electron Spectroscopy and XPS.

    How can we distinguish between Auger and core-level loss peaks (such as in XPS) in the secondary electron spectrum?
  8. S

    XPS for different oxidation states

    Dear All, for different oxidation states of the same element in X-ray photoelectron spectroscopy measurements, should the full width half maximum (FWHM) value be the same for all? Is this a parameter to fix in this case for the fitting? I am studying an amorphous transition metal oxide thin...
  9. A

    Determine density of states from an XPS spectrum

    I've heard any many places that the density of states (DOS) can be determined from an x-ray photoelectron spectroscopy (XPS) spectrum. Perhaps someone more knowledgeable than me can explain how this is done, or can direct me to a good resource? Thanks!
  10. N

    EDX vs. XPS: Which is Right for Your Application?

    Can someone help explain the difference between EDX(Energy-dispersive X-ray spectroscopy) vs. (XPS) X-ray photoelectron spectroscopy? Which is used for what application? Advantages/Disadvantages of each? From what I have been reading from documentation, they seem to be the same. Thanks.
  11. X

    Why Gold is the Reference Element for XPS: XRF & LIBS Alternatives

    Hi, guys! Gold is usually used as reference element to calibrate the detector in XPS due to the charge effect, why is Gold so specific? So what element can be the reference element for XRF and LIBS? Thanks a lot!
  12. D

    Understanding J Splitting in XPS

    Hi everyone, i have a doubt regarding XPS, i read that a doublet is formed, for example in argon when an electron from 2p orbital leaves and leads to the formation of 2p 3/2 and 2p 1/2 states, and an electron with slightly lesser energy than one in the 2p orbital is emitted, giving rise to...
  13. A

    Merging of overlapped XPS spectra with CASA ( tech. Help needed )

    Merging of overlapped XPS spectra with CASA ( tech. Help needed ) Does anybody knows ways ( options ) to merge two ( or more ) overlapping XPS spectra onto one ( extended ). See graphical example attached. Two optional exp. recoding need to be assumed. 1. "x" scale grid in overlapping...
  14. P

    XPS Spectroscopy: Removing Satellite Peaks

    I wonder if anyone have an idea about the software (CASA) used for the treatement of data dounded by XPS analysis. If yes, I am in need to know how to remove the satellite peaks that may show in a spectrum. thanks
  15. L

    Anyone Familiar with XPS for Ni Satellite?

    Hi guys, is there anyone who familar with xps? For Ni satellite, why the 2p1/2 satellithe only about 4.6ev? thx