an apparatus for detecting and analyzing ionizing radiation, consisting of a vessel filled with a gas at normal or lower than normal pressure and fitted with two electrodes such that the current between the electrodes is a function of the amount of ionization of the gas.
The modular neutron detector operates as an ionization chamber.
The ionization chamber detectors responded throughout these series of experiments with the wood brands.
British Dictionary definitions for ionization chamber
a device for detecting and measuring ionizing radiation, consisting of a tube containing a low pressure gas and two electrodes between which a high voltage is maintained. The current between the electrodes is a function of the intensity of the radiation