Hi Ilya: We always take data in this mode at APS Sector 10 and I have also find that the rebinning function is not working satisfactorily at this time. I find that for the current version of the software it is better to merge your data and let IFEFFIT interpolate to the dk=0.05 grid that it uses. Carlo On Wed, 27 Jun 2018, Ilya Sinev wrote:
Hi all,
I have a question regarding the chi(k) function isolation and rebinning processes. I have some data recorded in ?quasi channel-cut? modus, i.e. with the mono constantly moving and the data points collected with the highest possible rate. With 180 sec measurement in yields to a spectrum of ca. 8600 point, which obviously needs to be rebinned. The rebinned data, however, does not look good in k-space even if multiple data are merged. Moreover, I have an impression that the raw spectrum in k-space does not have those 8000+ points anymore but significantly less. Is there any reduction of the data points number that is not seen (e.g. as a preparation step for FT)? Since the unbinned data has higher quality, does it then make more sense to keep using it for EXAFS analysis?
Thank you
Ilya Sinev
-- Carlo U. Segre -- Duchossois Leadership Professor of Physics Interim Chair, Department of Chemistry Director, Center for Synchrotron Radiation Research and Instrumentation Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@iit.edu http://phys.iit.edu/~segre segre@debian.org