GSAS L's

Keith Rogers ( rogersk@rmcs.cranfield.ac.uk )
Thu, 22 Jan 1998 09:59:39 -0800

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Dear All
I have been trying to use GSAS on X-ray data from a sample with
significant line broadening. I find that refining the 'L' matrix
variables helps a great deal - but I do not understand their meaning.
Can anyone explain the physical significance of these parameters and how
they may be used to estimate crystallite size/strain ? Also - is it
necessary to fix U,V & W when the L's are used ?
I do remember a similar question being asked some time ago - but my
memory is not what it used to be and the archive of past messages does
not seem to be available.

With thanks in advance - Keith R.

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