Ken, If it is a thinner window than you had before, you should see the effect mostly for the softest x-rays: The ratio New counts/ old counts would be highest for the softest x-rays. The ratio would progressively decrease as x-ray energy increased. Peter Peter Michael McMan Professor and Chair Department of Geosciences The University of Tulsa 800 S. Tucker Drive Tulsa, OK. 74104 918-631-3017 Fax: 918-631-2091 [log in to unmask] From: JEOL-Focused Probe Users List <[log in to unmask]> on behalf of Ken Severin <[log in to unmask]> Reply-To: JEOL-Focused Probe Users List <[log in to unmask]> Date: Friday, June 15, 2018 at 12:22 AM To: "[log in to unmask]" <[log in to unmask]> Subject: Re: [PROBEUSERS] Detector Window question My thoughts too. I checked and they are. Maybe I got a super thin window! Ken On Thu, Jun 14, 2018, 14:20 Ron Rasch <[log in to unmask]<mailto:[log in to unmask]>> wrote: 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, [log in to unmask]<mailto:[log in to unmask]>, Electron Microprobe Lab, University of Minnesota Post a message: send your message to [log in to unmask]<mailto:[log in to unmask]> Unsubscribe: send "SIGNOFF PROBEUSERS" to [log in to unmask]<mailto:[log in to unmask]> On-line help and FAQ: http://probelab.geo.umn.edu/jeoluserlist.html<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fprobelab.geo.umn.edu%2Fjeoluserlist.html&data=02%7C01%7Cpjm%40UTULSA.EDU%7C93fd5dbf6b124eb19f0608d5d245577c%7Cd4ff013c62b74167924f5bd93e8202d3%7C0%7C0%7C636646117634515733&sdata=CmyHx9n58wZEteijIVtluuFjE3r83HvRo33sGbfJyUw%3D&reserved=0> * **** JEOL Probe Users Listserver Moderator: Anette von der Handt, [log in to unmask]<mailto:[log in to unmask]>, Electron Microprobe Lab, University of Minnesota Post a message: send your message to [log in to unmask]<mailto:[log in to unmask]> Unsubscribe: send "SIGNOFF PROBEUSERS" to [log in to unmask]<mailto:[log in to unmask]> On-line help and FAQ: http://probelab.geo.umn.edu/jeoluserlist.html<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fprobelab.geo.umn.edu%2Fjeoluserlist.html&data=02%7C01%7Cpjm%40UTULSA.EDU%7C93fd5dbf6b124eb19f0608d5d245577c%7Cd4ff013c62b74167924f5bd93e8202d3%7C0%7C0%7C636646117634515733&sdata=CmyHx9n58wZEteijIVtluuFjE3r83HvRo33sGbfJyUw%3D&reserved=0> * **** JEOL Probe Users Listserver Moderator: Anette von der Handt, [log in to unmask]<mailto:[log in to unmask]>, Electron Microprobe Lab, University of Minnesota Post a message: send your message to [log in to unmask]<mailto:[log in to unmask]> Unsubscribe: send "SIGNOFF PROBEUSERS" to [log in to unmask]<mailto:[log in to unmask]> On-line help and FAQ: http://probelab.geo.umn.edu/jeoluserlist.html<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fprobelab.geo.umn.edu%2Fjeoluserlist.html&data=02%7C01%7Cpjm%40UTULSA.EDU%7C93fd5dbf6b124eb19f0608d5d245577c%7Cd4ff013c62b74167924f5bd93e8202d3%7C0%7C0%7C636646117634515733&sdata=CmyHx9n58wZEteijIVtluuFjE3r83HvRo33sGbfJyUw%3D&reserved=0> * **** 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 *