Hi , I want to ask please what is the shortest k-range one can use for "Forward Fourier transform" in my projects I used: Spline range k 0.0 - 9.0 k range in Forward Fourier transform 1.0 - 9.0 A^-1 I am trying to reduce the contribution of noise in FT .. the attached project shows nice fit ,,,but high phase shift toward lower R value ,, any recommendation please I will appreciate .. and thank you in advance , best regards Mahmoud AL Humaidi --------------------------------------------------------------------------------- Mahmoud Al Humaidi Department of Physics, University of Siegen Emmy-Noether-Campus Walter-Flex-Str. 3, 57072 Siegen Room : B-015 Tel : +49 (0) 271 740 3727 ---------------------------------------------------------------------------------