Examining the influence of humidity on reference ionization chamber performance

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1002/mp.12057
AuthorSearch for: 1; Search for: 1
Name affiliation
  1. National Research Council of Canada. Measurement Science and Standards
FormatText, Article
Journal titleMedical Physics
ISSN0094-2405
2473-4209
Volume44
Issue2
Pages694–702
Abstract
International dosimetry protocols require measurements made with a vented ionization chamber to be corrected for the influence of air density by using the standard temperature‐pressure correction factor. The effect of humidity, on the other hand, is generally ignored with the provision that the relative humidity (RH) is within certain limits (typically 20% to 80%). However, there is little experimental data in the published literature as to the true effect of humidity on modern reference‐class ionization chambers. This investigation used two different radiation beams – a Co‐60 irradiator and an Sr‐90 check source – to examine the effect of humidity on several Farmer‐type ionization chambers.
Publication date
LanguageEnglish
Peer reviewedYes
NPARC number23003064
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Record created2018-04-18
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