ionization chamber


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Related to ionization chamber: proportional counter, scintillation counter

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 ?
Contract notice: dismantling of the ionization chamber smoke detectors in the bondy wood center of the epsvemarket of works carried out in order to comply with the decree of november 18, 2018, which frames the removal of smoke detectors with an ionization chamber (dfci).
Variations in response to radiation of a nylon walled ionization chamber induced by humidity changes.
Alburger and coworkers used end-window gas-flow proportional counter system and a liquid/plastic scintillation detectors and Siegert and coworkers used both 4[pi] ionization chamber and Ge and Si semiconductor detectors with reference to ionization chamber measurements.
Ionization chamber dosimetry for kilovoltage x-ray beams "An evaluation of ionization chambers for the relative dosimetry of kilovoltage x-ray beams.
To improve this process, Delgado built his own "very simple" ionization chamber out of some scraps, tape, and a breadboard.
radon rotating in the air trap in the ionization chamber during passing through the machine.
The redesigned ionization chamber provides high sensitivity and low background noise in combination with well-resolved GC peaks, delivering improved dynamic range and up to tenfold gains in sensitivity.
the electroscope, the ionization chamber, and the counting tube.
The NIST pressurized ionization chamber "A" has been used since the 1960s to maintain activity standards via calibration factors (K-values, vide infra) [83].
Radiation Detection, Monitoring & Safety Market (Geiger Counter, Ionization Chamber, Scintillator, Terahertz detector, Dosimeter, Environment Monitor, Shield, Lead Apron, Eyewear & Glove) - Competitive Analysis & Global Forecasts to 2017
They are moderately bulky, and like the pocket ionization chamber dosimeters are fairly expensive and require calibration and training for use.
A sampling of topics: a brief history of dosimetry, calibration protocols, and the need for accuracy; cavity theory, stopping-power ratios, and correction factors; ionization chamber instrumentation; review of TG-51 protocol; kilovoltage x-ray dosimetry; clinical electron beam dosimetry, thermoluminescent detector and Monte Carlo techniques for reference-quality brachytherapy dosimetry; dosimetry for small photo beams used for stereotactic radiosurgery/radiotherapy; hadron dosimetry; radiochronic film; diamond detector; gel dosimetry; Fricke and alanine dosimeters; and stopping-power ratios, rations of mass-energy coefficients, and CSDA ranges of electrons.