Actually i need to calculate the instrumental broadening of our institute X-ray diffractometer.
I don't really understand your request : if I send you xrd data of our corundum standart, you will have only the instrumental contribution of our diffractometer, not yours !! You need xrd data of corundum standart recorded with your apparatus
I don't really understand your request : if I send you xrd data of our corundum standart, you will have only the instrumental contribution of our diffractometer, not yours !! You need xrd data of corundum standart recorded with your apparatus
If you're using a corundum single crystal, then the intrinsic widths of the Bragg reflections, as calculated by dynamical diffraction theory, are extremely small (around 0.001 degree or less; see Appendix B in the attached document). I'd guess that pretty much the entire FWHM would be due to instrumental broadening. However, if you're calibrating with a powder, then particle size and strain effects might broaden the intrinsic sample FWHM.
Research Atomic Scale Structure-Chemistry Relationships at Oxide Cata...
Dear Buddhadev Samanta,
Please find the attached raw file of Corundum (Al2O3). May be useful to you.
Best of luck!!
Dear Christophe Lefevre, i need only instrumental broadening of our diffractometer. Other broadening i ll manage.
dear Buddhadev Samanta
to calculate the instrumental broadening of your diffractometer. you need to coolect data for standard sample like Al2O3, LaB6 or other using the same diffractometer which will be used for your sample.
see the next discussions
https://www.researchgate.net/post/How_to_calculate_the_instrumental_broadening_bi_in_the_observed_XRD_pattern_for_the_W_H_plot2
https://www.researchgate.net/post/How_to_find_the_instrumental_broardening_from_an_XRD
https://www.researchgate.net/post/How_can_I_calculate_instrumentation_broadening_in_XRD
https://www.researchgate.net/post/How_to_determine_the_broadening_effect_factor_of_an_XRD_equipment_in_measuring_grain_size_of_materials
As what Dr. Christophe said, You cant use SRM pattern from other instrument, unless u wanna use it to compare.
For latest instrument, SRM1976; FWHM below 0.05 or better (2theta < 50) is easily to achieve.
You cannot use a pattern collected on another instrument to find your instrumental broadening!!! If you are interested to microstructural determination you can also try, if it is possible, to treat your sample at high temperature to remove the particle size broadening from the FWHM of diffraction peaks and use this sample as a standard to determine the instrumental broadening.
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