What is the counting rate i.e. the counts/second (rather than total counts) in each channel? Depending on the type of detector, there may be counting losses (ie dead time) which are count rate dependant. The greater the count rate, the greater the loss as a fraction of intensity. Maybe the ability of the synchrotron to make photons exceeds the ability of the detector to count them. It would worth pursuing this with the Beamline scientist.
Cheers Ian Madsen On 15 Jan 2015, at 18:50, Marco Taddei <marcotad...@hotmail.com<mailto:marcotad...@hotmail.com>> wrote: Dear Rietvelders, Yesterday I was dealing with the refinement of silicon collected with synchrotron radiation at the MS beamline at SLS. The intensity of many reflections exceeds 10^6 counts, in some cases even reaching almost 10^7 counts. I noticed that the peaks exceeding 10^6 counts were kind of truncated, with the consequence that the pattern looked quite different from what it was supposed to be. Since I always treated data from home diffractometers so far, I never came across such an issue. My idea was to just divide all of the intensities by 10, so as to preserve the relative intensities and the signal/background ratio, is this a possible solution to the issue? Or there are maybe some other ways to deal with it? Thanks in advance. Best, Marco ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com<mailto:alan.he...@neutronoptics.com>> Send commands to <lists...@ill.fr<mailto:lists...@ill.fr>> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Cheers Ian Madsen On 15 Jan 2015, at 18:50, Marco Taddei <marcotad...@hotmail.com<mailto:marcotad...@hotmail.com>> wrote: Dear Rietvelders, Yesterday I was dealing with the refinement of silicon collected with synchrotron radiation at the MS beamline at SLS. The intensity of many reflections exceeds 10^6 counts, in some cases even reaching almost 10^7 counts. I noticed that the peaks exceeding 10^6 counts were kind of truncated, with the consequence that the pattern looked quite different from what it was supposed to be. Since I always treated data from home diffractometers so far, I never came across such an issue. My idea was to just divide all of the intensities by 10, so as to preserve the relative intensities and the signal/background ratio, is this a possible solution to the issue? Or there are maybe some other ways to deal with it? Thanks in advance. Best, Marco ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com<mailto:alan.he...@neutronoptics.com>> Send commands to <lists...@ill.fr<mailto:lists...@ill.fr>> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com> Send commands to <lists...@ill.fr> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
