> >Which x-ray powder diffractometer is the best? What is the
> >best optics for the diffractometer. What is the best
> >detection pathway etc.
>
> Have a look at a previous discussion regularly updated, showing
> real powder patterns of standard materials from different
> powder diffractometers in various configurations :
> http://sdpd.univ-lemans.fr/powdif/low_fwhm_and_rp.html
Given it is difficult to own/access several powder
diffractometers to compare at any detail. Is the following
rule of thumb valid: that most mainstream diffractometers
pretty much give approximately identical performance -
thus it is access to technical service and support that
is a main concern. Especially given the increased
electronics in the machines?
Another consideration is the software provided with
the diffractometer and openess to other programs.
Not much use collecting powder diffraction
data if you don't have the analysis options.
---
A change since the above page was written is the
availability(?) of various mirror/capilliary focussing
systems options to increase flux and specialist
applications. I have not used a powder diffractometer
that has these new features though.
Lachlan.
--
Lachlan M. D. Cranswick
Collaborative Computational Project No 14 (CCP14)
for Single Crystal and Powder Diffraction
Daresbury Laboratory, Warrington, WA4 4AD U.K
Tel: +44-1925-603703 Fax: +44-1925-603124
E-mail: [EMAIL PROTECTED] Ext: 3703 Room C14
http://www.ccp14.ac.uk
