Dear Masami Tsubota,
thanks for pointing to the paper. To be honest I'm not completely clear
about the meaning of some termini used in the summary, and about the
value of this new criterion. My questions:
1) What does "peak shift" really mean in this context? Obviously you
discuss any differe
Dear Antonio and Norberto,
Thank you, both of you.
It uses a single SRM and a single instrument, and a single geometry,
(snip)
if you consider thermal expansion of the detector box for Delta T <~ 1 deg.
I strongly agree with Antonio's plan. If I had budget, I should
performed them.
(FYI, w
Dear Norberto,
Thank you for your comments.
1. The differences in cell parameters on using different ranges may
well derive from the use of a “wrong” model, where “asphericity” of
the form factors (their vectorial dependence) is not considered, nor
anharmonicity of the atomic displ
Dear Johannnes,
Thank you, too.
Am I right that your new criterion (Σ|Δ2θR|(sum or all) = Min) relies on
the previous knowledge of the true, correct lattice parameter (which was
certified for LaB6 in case of the NIST material SRM 660a treated in the
article)?
No. The criteria do not rely on t
Sent on behalf of Antonio Cervellino (SLS), who's not in the rietveld list.
Best
Norberto
I have read quickly the paper (not attached but I found it)
It uses a single SRM and a single instrument, and a single geometry,
without reference to the accuracy of its angular calibration.
Therefore I
