Re: [sdpd] GSAS instrument parameter file

[Lachlan Cranswick <lachlanc...@magma.ca>]

Brian Toby's EXPGUI site probably has some tutorials as well - but there are
tutorials on the CPDW workshop website on initial bootstrapping with GSAS and
creation of a GSAS Instrument parameter file via the EXPGUI interface.

Workshop tutorial (starting off easy)
   http://www.cins.ca/cpdw/files/2007/gsas_cpdw_2007_workshop.pdf

example files used in the above tutorial pages:
   http://www.cins.ca/cpdw/files/cpdw.zip

NIST LaB6 standard is a good thing to use - though for also refining 
and checking polarisation of the X-ray beam - my preference is for 
cubic Y2O3 (annealed for a  few days at 1200 Celsius).  But for a first
start NIST LaB6 would be a safe thing to use.

----------

Various programs can convert X-Y diffraction data into GSAS format -
 i.e., ConvX for Windows : http://www.ccp14.ac.uk/ccp/web-mirrors/convx/
               http://www.ccp14.ac.uk/ccp/web-mirrors/convx/convx.zip

Lachlan

At 01:09 PM 10/5/2007 -0500, you wrote:
>Could someone please give me a bit of instruction on how to collect an
>instrument parameter file for a lab powder XRD instrument that I can use in
>GSAS?  I'm hoping to do some quantitative analysis using Rietveld, as well
>as set up some exercises for my XRD class.
>
>My understanding is that I need to collect a high-quality pattern using a
>standard (LaB6 or Si or ?anything else?).  But what then?  How do I prepare
>it for GSAS.  Can it be simply a 2-theta & counts text file?
>
>I assume I need different instrument parameter files for different
>wavelengths (We use Cu and Co, mainly).
>
>I'm new to GSAS, but I cannot find step-by-step instructions anywhere.
>
>Thanks for your help, and patience with a beginner.
>
>Jim Murowchick
>
>Dr. James B. Murowchick
>Associate Professor, Geology
>Department of Geosciences, 420 Flarsheim Hall
>5110 Rockhill Rd., Kansas City, MO  64110
>816 235-2979     Fax: 816 235-5535
>murowchickj...@umkc.edu
>
-----------------------
Lachlan M. D. Cranswick
Contact outside working hours /
  Coordonnees en dehors des heures de travail:
NEW E-mail / courriel:  lc *at* bluehaze.com.au
Home Tel: (613) 584-4226 ; Cell/mobile: (613) 401-6254
WWW: http://lachlan.bluehaze.com.au/
        P.O. Box 2057, Deep River, Ontario, Canada, K0J 1P0

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