I have a D5000 with a PSD and have obtained quite acceptable FWHM
(something like 0.06 degrees). I'm not of the opinion that the manufacturer of
the machine is the cause for it's performance in such matters as this; the
performance is a function of the optical layout. What is your sample? Do you
have some reason to think that it is free of particle size and micro-strain
induced broadening? Such samples are fairly rare. What is the window size on
the PSD? Is it in proper adjustment; the MBraun model I use is quite sensitive
to proper setup (I use a window size of about 4.5 degrees). What divergence
and Sollar slits are you using? The receiving Sollar slits have a particularly
large impact when using a PSD.
Jim
P.S. Three Cheers for Dave Bish!!!!
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James P. Cline CLINE@CREDIT.NIST.GOV
Ceramics Division VOICE (301) 975 5793
A256/223 FAX (301) 990 8729
National Institute of Standards and Technology
Gaithersburg, MD. 20899
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