Spinning the sample doesn't reduce preferred orientation much. It does, however, improve ones counting statistics very nicely. Martin -------------------------------- M Vickers Dept. of Chemistry UCL 20, Gordon Street London WC1E 0HX
Subject: RE: Quantitative analysisDate: Tue, 28 Oct 2008 09:25:13 -0500From: [EMAIL PROTECTED]: rietveld_l@ill.fr I am learning QPA and am worried about PO. I wonder why sample spinning isn’t discussed more. I am luckily able to barrow time on a newer diffractometer with a sample spinner. Does this reduce PO? Or completely eliminate it? There is a set up variable in GSAS for whether you are spinning the sample – are there guidelines for how many revolutions to spin the sample if you just want to reduce PO? Thanks to all for there help!!! Blaise * * * * * * * * * * * * * Blaise Mibeck Research Scientist Energy & Environmental Research Center University of North Dakota 15 North 23rd Street, Stop 9018 Grand Forks, ND 58202-9018 Phone: (701) 777-5077 Email: [EMAIL PROTECTED] _________________________________________________________________ Discover Bird's Eye View now with Multimap from Live Search http://clk.atdmt.com/UKM/go/111354026/direct/01/
