I'm not sure if Rietveld software such as Fullprof supports the Nelson-Riley function for peak position correction with capillary (or, e.g., gum trag.) samples.
Of course, it should really be called the Nelson-Riley-Taylor-Sinclair function (Nelson and Riley derived it experimentally using Debye-Scherrer data for an Al-Cu intermetallic, and Taylor and Sinclair derived it simultaneously using ray-tracing, which was pretty serious stuff in 1945). On 23 Nov 2009, at 01:25, Yokochi, Alexandre wrote: > Angel, > > Don't correct peak positions. Rather, use the appropriate parameter in > your refinement software (in Fullprof, usually a combination of zero and > sysin, but then again I usually have data from position sensitive > detectors)(if your instrument was properly aligned, zero should refine > to close to 0). > > 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: alor...@unex.es [mailto:alor...@unex.es] >> Sent: Saturday, November 21, 2009 6:27 AM >> To: rietveld_l@ill.fr >> Subject: software for correcting peak positions in capillary XRD data >> >> Dear colleages: >> >> could any of you indicate to me where to find free software to perform > the >> absortion correction for XRD data taken in the capillary geometry? I > need >> this to correct the peak positions. >> >> Thanks a lot, >> >> Angel L. Ortiz >> University of Extremadura, Spain >> > > == Dr Alun J. Carr School of Electrical, Electronic, and Mechanical Engineering University College Dublin Belfield, Dublin 4, Ireland Phone: +353-(0)1-716 1989 Fax: +353-(0)1-283 0534 Email: alun.j.c...@ucd.ie WWW: <http://tinyurl.com/9r4db> Please avoid sending me Word or PowerPoint attachments. See <http://www.gnu.org/philosophy/no-word-attachments.html>
