Ionization chamber and GM tube

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SUMMARY

The discussion clarifies the structural and functional differences between ionization chambers and Geiger-Müller (GM) tubes. Ionization chambers operate at normal gas pressure and are connected to galvanometers, while GM tubes function at low pressure and are linked to counters. The application of higher voltage in GM tubes facilitates electron avalanche, a feature not utilized in ionization chambers under standard conditions. This distinction is crucial for understanding their respective applications in radiation detection.

PREREQUISITES
  • Understanding of ionization physics
  • Familiarity with radiation detection instruments
  • Knowledge of gas pressure effects on detection mechanisms
  • Basic electronics, specifically voltage application in circuits
NEXT STEPS
  • Research the operational principles of ionization chambers
  • Study the design and function of Geiger-Müller tubes
  • Explore the impact of gas pressure on radiation detection
  • Learn about the applications of radiation counters in various fields
USEFUL FOR

Students in physics or engineering, radiation safety professionals, and anyone interested in the principles of radiation detection and measurement technologies.

karen0215
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Homework Statement



What are the difference between ionization chamber and GM tube in structure which make them have different functions?


The Attempt at a Solution



Higher voltage is applied to GM tube so that electron avalanche can occur.
Then I wonder that
if higher voltage is applied to ionization chamber, it can function as a GM tube.
 
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The difference is...
ionization chamber is connected to galvanometer and operate at normal gas pressure
while GM tube is connected to a counter and operate at low pressure

Is it?
 

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