Dear Tarek
There are several things to consider:
1-At an MX beamline the X-ray fluorescence (XRF) scans are usually used
to define good energies for measurement of anomalous data.
While XANES and XRF in general are similar techniques, they are used for
very different applications. This said,
Doing Fluroscence scan for protein crystal at Cu wavelength prior MAD or SAD
experiment shows usually fig like this
https://www.dropbox.com/s/800463dlcmws6d4/fig.png
1- Fig A should represent X ray fluorescence scan. is it the same as X ray
absorption scan. what does count represent in fig A