----
Silicon is considered the phase to use as a peak position standard.
As NIST has run out of NBS 640x for the forseeable future(?),
one option to obtain a good sample of Si for powder X-ray
diffraction purposes is Deane K. Smith's Gem Dugout.
"Deane K. Smith MRL/PSU" <SMITH@PSUMRL1.PSU.EDU>
Not sure of other good sources of Silion powder diffraction
stnadards?
Lachlan.
>
> I have to collect data on a sample with an internal standard and was
> wondering whether LaB6 or Si is preferable. The NIST standard for LaB6
> is rather expensive and was considering buying the 99.9% pure LaB6 from
> a supplier like CERAC. Is this sufficient for using as an internal
> standard? The same for Si?
>
> Thanks,
> Laurance Beauvais
> Long Group
> Dept. of Chemistry
> UC Berkeley
> http://alchemy.cchem.berkeley.edu
> lgb@alchemy.cchem.berkeley.edu
>
-- Lachlan M. D. CranswickCollaborative Computational Project No 14 (CCP14) for Single Crystal and Powder DiffractionDaresbury Laboratory, Warrington, WA4 4AD U.KTel: +44-1925-603703 Fax: +44-1925-603124 E-mail: l.cranswick@dl.ac.uk Ext: 3703 Room C14CCP14 Webpage (Under heavy reconstruction): http://www.dl.ac.uk/CCP/CCP14/