I wish to thank every one for their suggestions of instruments
and software. As many of you know we (texas A & M) are about to
purchase several x-ray powder diffractometers. Since money is
not a concern (texas oil, thank-you mr. opec) we are concentrating
on the optics and detectors. Our fist choice, in the optics, will be
between choosing the (G) mirror or the Ge monochromator (or both?).
Some time ago (1996 and 1998) this group touched on the subject.
My question is this. The community has had some time to exam both
the mirrors and the Ge monochromator for structural work. Which
one appears to be the best choice? The Ge monochromator is robust
but will also attenuate the xray flux (much more than the mirrors).
The mirrors on the other hand are sensitive to alignment but have
a higher throughput of the xray flux.
Will the mirror (plus slits) produce a parallel beam that is
free of alpha-2, good enough for fine structural work?
I need an expert's opinion on this. Any comments?
Thanks in advance
J.Reibenspies
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Joseph H. Reibenspies Ph.D. Associate Research Professor
Department of Chemistry Texas A & M University
College Station, Texas 77842 (979)845-9125
fx (979)845-8184 [EMAIL PROTECTED]
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