Comparison of the standards for absorbed dose to water of the NPL, United Kingdom and the BIPM for 60Co γ rays

被引：0
|
作者：
Kessler, C. [1 ]
Allisy, P. J. [1 ]
Burns, D. T. [1 ]
Duane, S. [2 ]
Manning, J. [2 ]
机构：
[1] Bur Int Poids & Mesures, F-92310 Sevres, France
[2] Natl Phys Lab, Teddington TW11 0LW, Middx, England
来源：
METROLOGIA | 2012年 / 49卷
关键词：
PHOTON BEAMS;
D O I：
暂无
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A comparison of the standards for absorbed dose to water of the National Physical Laboratory (NPL), United Kingdom and of the Bureau International des Poids et Mesures (BIPM) has been made in Co-60 gamma radiation under the auspices of the key comparison BIPM.RI(I)-K4. The comparison result, based on the calibration coefficients for two transfer standards and expressed as a ratio of the NPL and the BIPM standards for absorbed dose to water, is 0.9980 (0.0064). The degrees of equivalence for the NPL and the other participants in this comparison have been calculated and the results are given in the form of a table for the eleven national metrology institutes (NMIs) that have taken part in the ongoing comparison for absorbed dose to water. A graphical presentation is also given.
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页数：17
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