RE: Diffuse Background Under the Bragg Peaks

2006-09-11 Thread milinda a
Hello Everybody, Dr. Von Dreele, Thanks for the information. Yes, it really worked when I used starting values that you suggested. Only function number 3, which is the second derivative of the 1th diffuse function, worked in my case. May be my diffuse background is little complicated (it contain

Re: Diffuse Background Under the Bragg Peaks

2006-09-11 Thread Simon Billinge
sounds like a problem for PDF :) Simon milinda a wrote: Hello Everybody, Dr. Von Dreele, Thanks for the information. Yes, it really worked when I used starting values that you suggested. Only function number 3, which is the second derivative of the 1th diffuse function, worked in my case. May

RE: Diffuse Background Under the Bragg Peaks

2006-09-08 Thread Von Dreele, Robert B.
Dear Milinda, In the menu for introducing the diffuse scattering function setting initial values (especially for R - interatomic distance), set the refinement flags with V (as usual). If it didn't refine then your starting valued are not good. Set A=1.0, R to an interatomic distance U=0.005