Comparisons of the radiation protection standards for air kerma of the NIST and the BIPM for ^sup 60^Co and ^sup 137^Cs gamma radiation

An indirect comparison of the standards for air kerma of the National Institute of Standards and Technology (NIST), USA, and of the Bureau International des Poids et Mesures (BIPM) was carried out in the ...Co and ...Cs radiation protection-level beams of the BIPM in September 2011. The comparison r...

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Bibliographic Details
Published in:Metrologia 2014-01, Vol.51, p.1
Main Authors: Kessler, C, Allisy-Roberts, P J, Minniti, R
Format: Article
Language:English
Subjects:
Air
Calibration
Comparative analysis
Gamma rays
Kinetics
Radiation
Radiation protection
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Summary:An indirect comparison of the standards for air kerma of the National Institute of Standards and Technology (NIST), USA, and of the Bureau International des Poids et Mesures (BIPM) was carried out in the ...Co and ...Cs radiation protection-level beams of the BIPM in September 2011. The comparison results, based on the calibration coefficient for two transfer standards and expressed as a ratio of the NIST and the BIPM standards for air kerma, are 1.0023 with a combined standard uncertainty of 3.2 x 10... in ...Co, and 0.9990 with a combined standard uncertainty of 3.5 x 10... in ...Cs. The result in the ...Co beam for radiation protection agrees within the uncertainties with the result of the comparison carried out at the same time in the CIS Bio ...Co beam for radiotherapy-level air kerma. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0026-1394
1681-7575