I would also suggest that it is easier to just check that your instrument zero is aligned than to mess around with long scans and fitting routines to separate correlated variables.
Jools -----Original Message----- From: rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] On Behalf Of "Lukasz Kruszewski" Sent: 29. mars 2017 13:25 To: Ana Isabel Becerro Nieto <ani...@icmse.csic.es> Cc: rietveld_l@ill.fr Subject: Re: using Zero Hi. You can do that, of course, but you have to choose: you can use Zero error OR sample displacement, but never use both (this induces some physical impossibilities). However, I assume your diffractometer is calibrated, and the zero position of the detector is fine; the sample displacement may (I suppose) be connected with preparation-derived errors, and I'd use the latter parameter instead of the zero error. Hope this helps anyhow. Good luck! Luke Kruszewski > Dear all, > > I am using Si as internal standard to calibrate my pattern. Should I > refine the "Zero error" of the diffractometer if I am using the > calibrated pattern? > > Thanks a lot, > > Ana > > > > Dra. Ana Isabel Becerro > > Instituto de Ciencia de Materiales de Sevilla > > CSIC-US > > > > > > > > --- > El software de antivirus Avast ha analizado este correo electrónico en > busca de virus. > https://www.avast.com/antivirus > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Please do NOT attach files to the whole list > <alan.he...@neutronoptics.com> Send commands to <lists...@ill.fr> eg: > HELP as the subject with no body text The Rietveld_L list archive is > on http://www.mail-archive.com/rietveld_l@ill.fr/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > -- Łukasz Kruszewski, Ph.D., adjunct Polish Academy of Sciences Institute of Geological Sciences Twarda 51/55 str. 00-818 Warsaw Poland
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