Related Experiment Video
Updated: Feb 19, 2026

Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
Published on: May 9, 2014
Bias in the measurement of radon gas using ionization chambers: Application to SIR
S Pierre1, B Sabot1, P Cassette1
1CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Bât. 602 PC111 CEA Saclay, F-91191 Gif-sur-Yvette, France.
Abstract:
Two main non-destructive techniques can be used to measure standard 222Rn gas ampoules: well-type ionization chambers and gamma-ray spectrometry, the former being used in the Système International de Référence (SIR) for international comparison purposes. The reliability of these techniques requires that the variability of the flame-sealed gas glass ampoules used have a negligible influence on the detector response. This variability is studied in this work by considering three parameters: the volume of the ampoule, the position of the sealing point and the thickness of the glass. Results showed that variability of the gas ampoules induced measurement bias larger than the uncertainty of the standard sources.
Related Concept Videos
Biological Effects of Radiation
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences
Atomic Emission Spectroscopy: Lab
Gas Chromatography: Types of Detectors-II
Atomic Absorption Spectroscopy: Interference
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
Atomic Absorption Spectroscopy: Radiation and Light Sources
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...

