[Ifeffit] particle size effects on XAFS spectra

Dear Users, I am working with the EXAFS technique for the characterization of my powder sample. I must admit that i am very much new to the technique and its analysis. I have read many tutorials on preparing sample for XAFS measurement (both transmission and fluoroscence). However, i am dealing with the powder having particle size much more smaller than one absorption length. I would like to know will it create any destructive effect on my XAFS spectra ?? Many thanks in advance... Warm wishes, Rana