Dear Qixu Cai,
The following paper should be informative for your query:-
http://dx.doi.org/10.1107/S0909049595013288
Best wishes,
John
Prof John R Helliwell DSc
On 29 May 2012, at 10:11, Qixu Cai wrote:
> Dear all,
>
> Sorry for the question from MAD beginner.
>
> When we process the MAD
Hi,
you are right, the peak dataset corresponds to the highest f'' value.
However, this does not mean that f'' is null for the other
wavelengthes... you still have significant anomalous signal at the edge
and for the high energy remote wavelength... this will help your
phasing, so use it !
Thank you very much for your reply.
In my own understanding,
We collect the peak dataset, because of the large F'', and we can get
strong anomalous signal.
We collect the edge dataset, because of the large F', and combined with the
remote dataset, we can use the method just like SIR to get some
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Dear Qixu Cai,
MAD phasing is based on the comparison of Bijvoet-pairs, i.e. I(hkl)
with I(-h-k-l), both within one data set and between data sets.
Therefore you might get better results if your integration program does
not assume Friedel-pairs to hav
Hi,
when processing MAD data, all wavelength should be processed without
enforcing the Friedel's law... If you look at your fluorescence
spectrum, you will see that you have anomalous signal for the peak
(obviously) for the high energy remote and even forh the inflexion point.
For example, i
Dear all,
Sorry for the question from MAD beginner.
When we process the MAD datasets, including the peak-data, edge-data and
remote-data, which datasets need to be process with anomalous?
I know peak-data obviously need data processing with anomalous, but what
about edge-data and remote-data
