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Figure 18   Minimizing Gamma Influence with Boron Coating Area
COMPENSATED ION CHAMBER

Instrumentation and Control 2 of 2
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IONIZATION CHAMBER Radiation Detectors Summary Ionization chambers are summarized below. Ionization Chamber Summary When  radiation  enters  an  ionization  chamber,  the  detector  gas  at  the  point  of incident radiation becomes ionized. Some of the electrons have sufficient energy to cause additional ionizations. The electrons are attracted to the electrode by the voltage potential set up on the detector. If  the  voltage  is  set  high  enough,  all  of  the  electrons  will  reach  the  electrode before recombination takes place. Gamma sensitivity reduction is accomplished by either reducing the amount of chamber gas or increasing the boron coated surface area. IC-06 Page 34 Rev. 0







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