Hi,
I sent this to Jon this afternoon and thought that I'd pass the e-mail
on.
Here goes ...
You'll probably find a pre-PRODD CCSL subroutine that I wrote that
goes along the lines of
width^2 = u^2 * ( tan(theta)-tan(theta_m) )^2 + w^2
Two neat things about this equation is that it
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Title: RE: About zero counts etc.
Dear all,
Jon's right - when the counts are very low - i.e. zeroes and ones around - then the correct Bayesian approach is to use Poisson statistics. This, as Jon said, has been tackled by Antoniadis et al. (Acta Cryst. (1990). A46, 692-711
Title: PDRA in powder diffraction studies of hydrogen storage materials
I have a postdoc position available immediately for powder diffraction research in the area of hydrogen storage materials. Details below.
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Professor W I F David,
CCLRC Senior Fellow,
Hi Jon,
A lot of what you'll need is in the back of the International Tables Vol. A
in Chapter 15 which goes under the snappy title of Euclidean and affine
normalisers of space groups and their use in crystallography. From memory,
earlier incarnations of Vol. A do not have this chapter.
Bill
, 31 Mar 2004, David, WIF (Bill) wrote:
Hi Jon,
A lot of what you'll need is in the back of the International Tables Vol.
A
in Chapter 15 which goes under the snappy title of Euclidean and affine
normalisers of space groups and their use in crystallography. From
memory,
earlier incarnations
PROTECTED]
Sent: 31 March 2004 23:05
To: [EMAIL PROTECTED]
Bill,
Thanks! Exactly what I was after and I'd never have guessed it from the
title...
Jon
On Wed, 31 Mar 2004, David, WIF (Bill) wrote:
Hi Jon,
A lot of what you'll need is in the back of the International Tables Vol.
A
in Chapter
