Alternatively, you can use PANanalytica X 'pert high score plus to find FWHM.
Good Morning Ezzah,
look here
http://qhwiki.originlab.com/~originla/howto/index.php?title=QuickHelp:How_do_I_calculate_the_FWHM
Kind Regards.
Petr
first you need to set the baseline. (Use base line modifications)
then go for peak analysis or peak area report will give you the FWHM.
Morning,
to do this maybe is better to use a more precise software. I find extremely useful the Peakfit program.
In this book you can find the procedure, I have used it
B.D. Cullity & S.R. Stock (2003) “Elements of X-ray Diffraction” Prentice Hall (3ª edición)
TQ for all answers but my result not XRD or XPS, my result is Photoluminescence (PL) and i want to find it's FWHM.
Dear Haris Kumar,
after I click peak fitting button, this table come out and I can't click OK, so what your suggestion to overcome this problem and what the meaning of 'monotonic increase'?
Haris Kunari, after I click analysis and go to fitting what must I choice fit single peak or fit multi-peak if i want to fitting my graph (as shown my comment above). your fitting graph so look nicely. so i hope i can fitting my graph as same as your graph. TQ for your help.
Hello. The w-value (width) is not always the FWHM value. For the GAUSS function the FWHM=w*sqrt(ln4), for the VOIGT function there is approximation FWHM=0.5346wL+sqrt(0.2166*wL^2+wG^2), where wL and wG (widths of the Lorentzian and Gaussian contributions) are given by the Origin after the fitting.
I have the same problem. Does you find a solution
Ezzah Azimah Alias
Dear Ezzah,
You can find a nice and clear tutorial here : https://www.youtube.com/watch?v=PwCc4ecj2w0
There is one big drawback if you use origin or the commercially available software packages. They actually do not offer you the most physically reasonable function which is that of the classical damped harmonic oscillator model (CDHO). In fact, while everybody uses Lorentz-profiles it seems that only few people are aware of the fact that the Lorentz-profile has been derived from the CDHO by applying three different approximations and those hold only very good for comparable weak oscillators.
Another drawback of such software is that the Lorentz-profile was originally introduced for only one oscillator. It seems that the extension to more than one is straightforward, but if you do it in the correct way, then you can not only obtain the oscillator parameters like damping, strength and position, but also calculate the changes of the index of refraction function (without having to invoke the Kramers-Kronig relations!).
Read the full story here: Article Quantitative Evaluation of Infrared Absorbance Spectra - Lor...
Hello Everyone, my question is very basic, but I am confuse so I am asking. I used origin to calculate FWHM and got FWHM= 3.00889 but I don't know the unit of it, either it is in degree or nm?
Giang Nguyen thanks for your kind response. Someone told me that the unit is in nm. Could you please provide me literature related to it, if possible then. I will be thankful.
This very simple . Why you need Origin softare . some time manual or working on hand is very accurate sister.
Watch this video, you can calculate FWHM in Origin
🔴 How to Calculate FWHM in XRD
https://youtu.be/WauGqgz3vy8
Ezzah Azimah Alias FWHM or the integral breadth (in some cases) play a vital role in the calculation of crystallite size (through Scherrer equation), microstrain, and Williamson-Hall plot etc. In the following video tutorial, I have discussed how to calculate FWHM using Origin. For example, FWHM is used in XRD for calculating crystallite size with the help of Scherrer equation. The video explains all the steps to be performed to calculate FWHM. In the case you want to further ask about it, please do comment on the specific video, I'll respond to it shortly. I have provided the practice file here. Thanks
https://youtu.be/tziXRV4XM0k
This video shows how to find peak position and calculate FWHM from XRD data in origin easily.#aminulcheminnovation #aminulSir
https://youtu.be/0V-5pV-CaqU
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