Irshad K A

4 Questions 20 Answers 0 Followers

Questions related from Irshad K A

How can i extract the integrated intesity (calculated and observed) of individual reflections in GSAS?

I did Rietveld refinement for my x-ray diffraction data using the GSAS+EXPGUI package. The fit seems to be good. Now i wish to extract the Integrated intensity ( both calculated and observed) of...

05 May 2017 5,563 4 View

How do i get a reliable Rietveld refinement of high pressure x-ray diffraction data containing mixed phases whose peaks are completely overlapped?

I am trying to refine High pressure(HP) xrd data of my sample using GSAS+ EXPGUI package. I have observed a structural phase transition,speculating that there are two phases originating at the...

07 June 2016 5,163 8 View

Is it necessary to apply polarisation correction in Fit2D, if care is taken during the Rietveld refinement?

I wish to do a Rietveld refinement on my powder diffraction data using the GSAS+EXPGUI software package, where i have a freedom to chose the polarisation correction as a variable or can be fixed...

09 September 2015 1,031 3 View

Why the site occupancy parameter in Rietveld refinement gives a negative value?

Data was collected with a laboratory x-ray source in transmission geometry. I have tried to refine the site occupancy parameter for my sample using GSAS+EXPGUI program.The refinement was done by...

19 March 2015 2,393 14 View