How temperature affects GM tube performance?

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SUMMARY

The discussion focuses on the impact of temperature on GM tube performance, specifically noting an increase in tally from 4 degrees to 55 degrees Celsius. Participants agree that temperature influences the vapor pressure of the quencher, which can affect quenching efficiency but not sensitivity. Research indicates that GM tubes operate effectively within a specified temperature range, suggesting that observed tally fluctuations may be normal rather than indicative of poor performance.

PREREQUISITES
  • Understanding of GM tube operation and quenching mechanisms
  • Familiarity with temperature effects on electronic detection systems
  • Knowledge of vapor pressure concepts related to gases
  • Basic principles of radiation detection and measurement
NEXT STEPS
  • Research the effects of temperature on GM tube quenching efficiency
  • Explore scientific literature on GM tube performance across temperature ranges
  • Learn about vapor pressure and its implications for gas detectors
  • Investigate calibration techniques for GM tubes under varying environmental conditions
USEFUL FOR

Radiation detection specialists, physicists, and engineers working with GM tubes or involved in radiation measurement and monitoring.

lingleo
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Anyone familiar with GM tube, please share some experience on the effect of temperature to GM tube performance, how does it influence?
I found our GM tube tally has increase a little as the temperature increased rapidly from 4 degree to 55 degree, I wonder is it a casualness or a indication of bad performance?
Thanks a lot!
 
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I have not worked with GM counters since tens of years. I think that the only way that temperature can affect the behavior of the tube is through the vapor pressure of the quencher. If the temperature is too low some of the quencher condenses. This does not change the sensitivity, but the quenching itself can be affected.
 
Thanks for your answer.
I also doubted it was the normal tally fluctuation. From the research papers it seems GM tube will work well within the temperature range.
 

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