Thank you for the reply. I have one more question regarding preferred orientation. Is there any software that can simulate diffraction patterns with preferred orientation? Or two different population of crystals with different preferred orientation? Any help is highly appreciated.
This software generate powder difractogramme in Rietweld refinement mode with accounting of preferred orientation and few phases in sample. We obtene stable results for sample with up to 5 phases.
If you want to have a 2D image, I would turn to those programs who do texture analysis, e.g. MAUD. However I am not in that field and cannot tell you anything more, I do not know if it simulates a 2D image of powder rings.