Patrick, The usual thing is to correct the data using a 1/(sin theta) correction. Notice that you'll have to create an ESD format file for GSAS and calculate what your ESDs (or SUs or whatever) in the corrected data is or you'll get funny statistics. The goal is I/sigma I stays constant - figure out from there and from what GSAS assumes the ESDs are (or maybe you already have a file with explicit ESDs...) how make this transformation.
Alex Y ________________________________________ Dr. Alexandre (Alex) F. T. Yokochi Assistant Professor Department of Chemical Engineering Oregon State University Corvallis, OR 97331-2702 Voice: (541) 737-9357 Fax: (541) 737-4600 http://oregonstate.edu/~yokochia > -----Original Message----- > From: Patrick D Burton [mailto:[EMAIL PROTECTED] > Sent: Friday, March 07, 2008 2:34 PM > To: [email protected] > Subject: RE: Analysis of data from instruments with theta-compensating > slits > > Yes, I'm working with an X'Pert Pro with constant illumination length, and > I was wondering if there is a software correction for it in GSAS. The > patterns I have worked with so far can only be refined by changing the > thermal parameter to impossible values. > > Thanks, > Patrick Burton > > On Sat, 8 Mar 2008 [EMAIL PROTECTED] wrote: > > > Patrick > > > > Do you mean like constant illumination length slit settings? > > > > > > Matthew Rowles > > > > > > > > -----Original Message----- > > From: Patrick D. Burton [mailto:[EMAIL PROTECTED] > > Sent: Sat 08/03/2008 5:54 > > To: [email protected] > > Cc: > > Subject: Analysis of data from instruments with theta-compensating > slits > > > > > > Reitvelders, > > > > I was wondering if anybody is performing Reitveld analysis on data > collected using theta compensating slits. > > If so, what sort of intensity correction are you using? > > > > Thank you, > > > > Patrick Burton > > > > > > > > ------------------------------ > Patrick D. Burton > Graduate Research Assistant > [EMAIL PROTECTED] > ------------------------------
