Re: As sent to the neutron mailing list

[Frank L May]

As a user of conventional laboratory powder XRD equipment, I too would
like to "touch with my fingers such a wonderful powder pattern" (nice,
Armel).

I accept visually as a peak one which has five (5) adjacent points
observed above background.  With a peak having breadth of 0.006 degree,
the effective stepsize required is 0.0012 degree (or is HRPD done
differently?).  Using a stepsize of 0.0012 degree across a 90 degree
range produces a really L-A-R-G-E(!) data set.  Or again, do
practitioners of HRPD do things differently?  Educate me.

Frank May
Department of Chemistry
University of Missouri-St. Louis
St. Louis, Missouri
[EMAIL PROTECTED]