RE: Re: Problems using TOPAS R (Rietveld refinement)

2007-03-21 Thread Whitfield, Pamela
I have to disagree with that; at least on a practical front with lab XRD. I have done measurements myself with samples containing large portlandite plates (granted, not a silicate but lovely-looking plates in a SEM) for quantitative analysis. The whole point of the work was to see if

RE: Re: Problems using TOPAS R (Rietveld refinement)

2007-03-21 Thread Whitfield, Pamela
. Dipo Omotoso From: Whitfield, Pamela [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 21, 2007 7:51 AM To: rietveld_l@ill.fr Subject: RE: Re: Problems using TOPAS R (Rietveld refinement) I have to disagree with that; at least on a practical front with lab

RE: Re: Problems using TOPAS R (Rietveld refinement)

2007-03-15 Thread Omotoso, Oladipo
Leandro, You probably should consult the references suggested by Alan Hewat and Reinhard Kleeberg before you read anything into your reasonable Rwp. Kaolinite is grossly over-parametized in your refinement strategy. If you are stuck with TOPAS, you may want to contact Arnt Kern (Bruker)