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Types of Devices: Ion Chambers

Ion Chamber
Ion Chamber 

In an ion chamber, the output signal is proportional to the particle energy. This gives us the ability to identify the type of particle and its energy. The signal for this type of device is not large, so only strongly ionizing particles (e.g., α, p, fission fragments, heavy ions) are detected.

Device Profile

  • Energy range > 10 keV
  • Pulse counting ionization chamber and integrating ionization chamber
  • Parallel plate or concentric cylinder design
  • Gas: air
  • "Window" for α and/or β
  • Neutron Detection: gamma sensitivity is reduced by decreasing the amount of chamber gas or increasing the boron coated surface area

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