Stefan,
Not really. You should care about full width at half maximum - that should
not be negative in any case. As follows, negative W does not have much
sense. Negative U is also suspicious because it means that at higher angles
your peak width may stop increasing with the 2Theta increase, which is
rarely the case. V, however, certainly can be positive. But only their
combination (resulting FWHM) has a meaning, not individual parameters.
with best regards,
Yaroslav
At 11:17 AM 6/25/2007, you wrote:
Dear All,
i am a little bit confused about the magnitudes of the U V W profile
parameters of the caglioti function for instrumental broadening. Is it
true, that U and W are always positiv (larger 0) and V is always smaller 0
(negativ)?
Thanks for your hints and explanations.
Best Regards,
Stefan
