Re: Strength of spherical harmonic preferential orientation correction

Hi, Fracois, Take a look in the book "Powder diffraction, Theory and practice" edited by Dinnebier and Billinge, published by The Royal Society of Chemistry, 2008. In chapter 12, page 347 you can find the texture strength for spherical harmonics - formula (52). You have only to add a factor 1/4

Strength of spherical harmonic preferential orientation correction

Dear Rietveld users, I am currently testing the Spherical Harmonic Preferential Orientation (SH-OP) correction implemented in the last version of HighScorePlus. It is working nicely, nevertheless I would like to compare the old March-Dollase correction parameter with the new SH-OP parameters

Re: preferential orientation

Dear Christian (and others) your reply about preferred orientation probabaly not being a problem with a cubic mineral is of interest to me. This is something I have wondered about in the past because of observations I have made on common salt, so I thought I would contribute to this discussion

Re: preferential orientation

Dear Stephen, You are quite correct. I was going to make the same reply to Christian's comment also using NaCl as an example. What I would add though is that NaCl may be more prone to preferred orientation as the cubes are close to perfect - in contrast to say cubic zeolites where I have

Re: preferential orientation

your reply about preferred orientation probabaly not being a problem with a cubic mineral is of interest to me. I can testify to have seen huge preferred orientation occuring in some cubic perovskites, at least. Too much intensity in those h00. Armel

Re: preferential orientation

Could you please advise me how must prepare my powder to obtain a pattern= without preferentiel orientation. My sample is a zeolite X exchanged I'm going to do a strucutre resoltion and its affinmey using the Rietveld= commercial software With many thanks for your help and best regards,

Re: preferential orientation

Dear Ouassyla since zeolite X is cubic I do not think that you will have any problems with preferred orientation! Just sit back, relax and enjoy the beautiful structure ;-) Best Christian Baerlocher On May 30, 2004, at 9:38 PM, fatiha belarbi wrote: Dear All, Could you please advise me how

RE: preferential orientation

n. I hope it will help. With best regards, Husin -Original Message-From: fatiha belarbi [mailto:[EMAIL PROTECTED] Sent: Sunday, May 30, 2004 1:39 PMTo: [EMAIL PROTECTED]Subject: preferential orientation Dear All,Could you please advise me how must prepare my powder to obtain