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ullix
Germany
1171 Posts |
 Posted - 09/15/2022 : 01:50:12
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After the recent discovery of old scientific literature by SelTec and Damien I took another look at the light sensitivity of my own, some dozen glass Geiger tubes. And all do respond to near-UV (395 nm), albeit to a different extent. So, my own experiments confirm the literature. This leads me to say that indeed:
All Geiger tubes made from glass are light sensitive!
Everybody will measure some "sunshine" but not necessarily radioactivity. Just to a different extent, depending on how lucky you got with the tube in your counter.
As a remedy I tried black heat-shrinking tubing to wrap the tube. This resulted in a significant reduction of the light-sensitivity, but it was not a complete cure.
Of course, as a side effect it reduces the Geiger sensitivity of the tube.
I summarized my findings in my article "GeigerLog-Light Sensitivity of Glass Geiger Tubes" in my article folder:
https://sourceforge.net/projects/geigerlog/files/Articles/
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| Reply #1
ihab17
Italy
218 Posts |
Posted - 09/15/2022 : 05:15:12
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| So you finally figured out the answer to your long-running question that I have read in your posts asking and telling EmfDev since ages! |
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| Reply #2
EmfDev
2250 Posts |
Posted - 09/19/2022 : 09:40:34
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| We have been using the black shrink tube to cover the tube for a while and this problem has been solved. |
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| Reply #3
ullix
Germany
1171 Posts |
Posted - 09/21/2022 : 07:08:51
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quote:
We have been using the black shrink tube to cover the tube for a while and this problem has been solved.
Great.
So you agree that the light sensitivity problem existed, and now that you've solved the defect, you will be offering to all users a replacement for all their dysfunctional tubes?
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| Reply #4
ihab17
Italy
218 Posts |
Posted - 09/21/2022 : 07:46:15
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quote:
So you agree that the light sensitivity problem existed, and now that you've solved the defect, you will be offering to all users a replacement for all their dysfunctional tubes?
Ha ha ha ha ha ha ha ha. Great comment |
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Light Sensitivity of Glass Geiger Tubes
