The inverse-square gamma-irradiation anomaly of the nuclear enterprise 2575 large-volume ionisation chamber

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DOIResolve DOI: http://doi.org/10.1093/rpd/ncu306
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TypeArticle
Journal titleRadiation protection dosimetry
ISSN0144-8420
AbstractThe Nuclear Enterprises (Model 2575) 600 cc ionisation chamber is examined to discover the cause of its anomalous behaviour in inverse-square stability measurements. Measurements and Monte Carlo calculations are employed to isolate the cause of the discrepancy. It is found that most of the effect is due to the long photon attenuation pathlengths in the long side wall of the instrument. A phenomenological procedure, based on measurements, is proposed to correct for the anomaly. The procedure results in inverse-square stability to within 0.5% over a range of 1-7 meters.
Publication date
LanguageEnglish
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
NPARC number21274933
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Record identifier02126d7b-2628-4658-938b-ff44a94e578b
Record created2015-05-01
Record modified2016-05-09
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