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
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.