ionization chamber

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chamber

 [chām´ber]
an enclosed space.
Chambers of the eye. From Dorland's, 2000.
anterior chamber the part of the aqueous humor-containing space of the eyeball between the cornea and iris.
counting chamber the part of a hemacytometer consisting of a microscopic slide with a depression whose base is marked in grids, and into which a measured volume of a sample of blood or bacterial culture is placed and covered with a cover glass. The number of cells and formed blood elements in the squares is counted under a microscope and used as a representative sample for calculating the unit volume.
drip chamber the expanded portion of intravenous tubing into which fluid falls, where the rate of flow can be monitored if necessary. See also intravenous infusion.
hyperbaric chamber an enclosed space in which gas (oxygen) can be raised to greater than atmospheric pressure; see also hyperbaric oxygenation.
ionization chamber an enclosure containing two or more electrodes between which an electric current may be passed when the enclosed gas is ionized by radiation; used for determining the intensity of x-rays and other rays.
posterior chamber that part of the aqueous humor–containing space of the eyeball between the iris and the lens.
vitreous chamber the vitreous humor–containing space in the eyeball, bounded anteriorly by the lens and ciliary body and posteriorly by the posterior wall of the eyeball.

i·on·i·za·tion cham·ber

a chamber for detecting ionization of the enclosed gas; used for determining intensity of ionizing radiation.
See also: Geiger-Müller counter.

ionization chamber

a small cavity filled with air that collects the ionic charge liberated during irradiation. The exposure and dose of radiation can be calculated from the amount of change liberated and the mass of air in the chamber.

ion·i·za·tion cham·ber

(ī'on-ī-zā'shŭn chām'bĕr)
A chamber for detecting ionization of the enclosed gas; used for determining intensity of ionizing radiation.

ion·i·za·tion cham·ber

(ī'on-ī-zā'shŭn chām'bĕr)
A chamber for detecting ionization of the enclosed gas.

chamber

an enclosed space.

anterior chamber
the part of the aqueous humor-containing space of the eyeball between the cornea and iris.
hyperbaric chamber
an enclosed space in which gas (oxygen) can be raised to greater than atmospheric pressure. See also hyperbaric oxygenation.
ionization chamber
see ionization chamber.
posterior chamber
that part of the aqueous humor-containing space of the eyeball between the iris and the lens.
vitreous chamber
the vitreous humor-containing space in the eyeball, bounded anteriorly by the lens and ciliary body and posteriorly by the posterior wall of the eyeball.

ionization

1. the dissociation of a substance in solution into ions.
2. iontophoresis.

ionization chamber
an enclosure containing two or more electrodes between which an electric current may be passed when the enclosed gas is ionized by radiation; used for determining the intensity of x-rays and other rays.
References in periodicals archive ?
For most ionization chambers (IC), links were established from the relative difference between the LSC-determined activity and the IC-determined activity using a given calibration factor.
Both the Radcal 10X5-1800 ionization chamber and an RTI R100B solid-state detector (sensitive area 1 [cm.
To order this report: Medical_Equipment_and_Supply Industry : 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
Seltzer, Correction Factors for the NIST Free-Air Ionization Chambers Used to Realize Air Kerma from W-Anode X-Ray Beams, Report NISTIR 7887, National Institute of Standards and Technology, Gaithersburg, MD (2012).
The uncertainties associated with the calibration of the transfer ionization chambers at the NIST and at the PTB are listed in Table 8.
These daily air kerma rate values are tracked using a laboratory developed spreadsheet and confirmed through routine measurements using ionization chambers models LS01 and LS10 as part of the quality control of the facility.
For over 30 years scientists in the NIST radioactivity group have been using their pressurized ionization chamber "A" (PIC "A") to make measurements of radioactivity and radioactive half-lives.
Ritz, Design of free-air ionization chambers for the soft x ray region (20-100 kV), Radiology 73, 911-922 (1959).
region ii, for therapeutic x-ray irradiation and field ionization chambers including software for radiotherapy.
All four of the free-air ionization chambers used in the comparison are of the conventional parallel plate design.
Contract notice: Instrumentation hospitals hradec krEilove region ii, for therapeutic x-ray irradiation and field ionization chambers including software for radiotherapy.
The subject of the public contract is to supply one piece of therapeutic x-ray equipment and one piece of field ionization chambers incl.