ionization chamber

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ionization chamber

n.
A gas-filled enclosure containing positive and negative electrodes that measures the amount of radiation passing through it by measuring the electric charge generated when the ions created by the radiation migrate to the electrodes.

ionization chamber

n
(General Physics) 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

ioniza′tion cham`ber


n.
an apparatus for detecting and analyzing ionizing radiation by measuring current between electrodes in a vessel filled with a gas at normal or lower than normal pressure.
[1900–05]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ionization chamber - a measuring instrument that measures the amount of ionizing radiation
boron chamber - an ionization chamber lined with boron or filled with boron trifluoride gas for counting low velocity neutrons
Geiger tube, Geiger-Muller tube - an ionization chamber contained in a tube in a Geiger counter
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
References in periodicals archive ?
This requires us to maintain an extensive catalog, and we are a leading supplier of x-ray tubes, flat panel digital detectors, high-voltage connectors, X-ray collimators, ionization chambers, mammography paddles, solid state automatic exposure control systems and buckies for digital imaging.
One of the main goals of the QA procedures is to minimize errors related to dose delivery, which can be prevented using radiation detectors, such as ionization chambers, dosimetric Alms, or semiconductor detectors.
Furthermore the ionization chambers do not act as Bragg-Gray cavities in the low energy x-rays and so cavity theory is not applicable [6].
A companion paper describing the development of calibration factors for several re-entrant ionization chambers (often called "dose calibrators") using different geometries was also published at the same time [2].
Radon accumulated on these filters are counted by special detectors for counting alpha (ionization chambers) and will measure radon.
Limited numbers of the ionization chambers for personal dose assessment, of civil defense program vintage, are still available.
Pocket ionization chambers, also known as pocket dosimeters, are the most sensitive of all personnel dosimeters.
An alternative comparison method was ultimately proposed, wherein laboratories used primary activity standards to calibrate pressurized ionization chambers [25,35].
A number of add-on probes are available, for example: mAs probes, ionization chambers, dose detectors and light detector.
2), the service engineer discovered that the cause was the ionization chambers of the automatic exposure control (AEC) unit.