Comparison of the standards for air kerma of the MKEH and the BIPM for 137Cs gamma radiation

An indirect comparison of the standards for air kerma of the Magyar Kereskedelmi Engedelyezesi Hivatal (MKEH), Hungary, and of the Bureau International des Poids et Mesures (BIPM) was carried out in the 137Cs radiation beam of the BIPM in October 2009. The comparison result, expressed as a ratio of...

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Bibliographic Details
Published in:Metrologia 2010-01, Vol.47, p.06013-06013
Main Authors: Kessler, C, Allisy-Roberts, P J, Csete, I, Machula, G
Format: Article
Language:English
Subjects:
Beams (radiation)
Calibration
Chambers
Metrology
Recognition
Texts
Uncertainty
Online Access:Get full text
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Summary:An indirect comparison of the standards for air kerma of the Magyar Kereskedelmi Engedelyezesi Hivatal (MKEH), Hungary, and of the Bureau International des Poids et Mesures (BIPM) was carried out in the 137Cs radiation beam of the BIPM in October 2009. The comparison result, expressed as a ratio of the MKEH and the BIPM calibration coefficients of a transfer chamber for air kerma, is 1.0053 with a combined standard uncertainty of 2.5 X 10-3. The result of the earlier direct comparison in 137Cs Delta *g rays, made in 1994, was 0.9954(30); taking into account the changes made recently to both standards, the 1994 result becomes 1.0038(30), in agreement with the present comparison result. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCRI Section I, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).
ISSN:0026-1394
DOI:10.1088/0026-1394/47/1A/06013