Yes, sounds big to me too. Are the slits in the same position ? Ron Uni of QLD On 15/06/2018, at 6:27 AM, "Ken Severin" <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hi all - we just changed the detector window on one of our argon detectors and are seeing somewhere around 20-25% more counts using the new window. This seems like a huge increase. While I would expect some change, I would expect the change to be in the range of a couple percent. Has anyone else seen this? Thanks! Ken Severin U Alaska Fairbanks JXA-8530F **** JEOL Probe Users Listserver Moderator: Anette von der Handt, <mailto:[log in to unmask]> [log in to unmask]<mailto:[log in to unmask]>, Electron Microprobe Lab, University of Minnesota Post a message: send your message to <mailto:[log in to unmask]> [log in to unmask]<mailto:[log in to unmask]> Unsubscribe: send "SIGNOFF PROBEUSERS" to <mailto:[log in to unmask]> [log in to unmask]<mailto:[log in to unmask]> On-line help and FAQ: <http://probelab.geo.umn.edu/jeoluserlist.html> http://probelab.geo.umn.edu/jeoluserlist.html * **** JEOL Probe Users Listserver Moderator: Anette von der Handt, [log in to unmask], Electron Microprobe Lab, University of Minnesota Post a message: send your message to [log in to unmask] Unsubscribe: send "SIGNOFF PROBEUSERS" to [log in to unmask] On-line help and FAQ: http://probelab.geo.umn.edu/jeoluserlist.html *