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| The NIM-IAEA Bilateral Comparison on the Air Kerma and Absorbed Dose to Water of 60Co γ Radiation |
| JIN Sun-jun1,WANG Zhi-peng1,2,WANG Kun1,YANG Xiao-yuan1,HUANG Jin-feng3, FAN Yao-dong1,CHANG Xue1,ZHANG Jian1 |
1. National Institute of Metrology, Beijing 100029, China
2. Anhui University of Science & Technology,Huainan, Anhui 232000, China
3. Shenyang Metrology Testing Institution, Shenyang, Liaoning 110179, China |
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Abstract In the 60Coγ primary standard laboratory at National Institute of Metrology(NIM), the primary standard values of the air keama and absorbed dose to water of 60Coγ radiation were disseminated to the FC65-G-2869 chamber from International Atomic Energy Agency(IAEA), and then the calibration factors were obtained.The calibration factors of the two physical quantities given by NIM were compared with the original calibration factors from IAEA.For the NIM calibration factors of the air kerma and absorbed dose to water of 60Coγ radiation to the IAEA FC65-G-2869 chamber, the discrepancies are 0.5% and 0.1% respectively, relative to the corresponding IAEA results.The comparison results are considered to be acceptable.This work is the preliminary preparation for NIM to participate in the ongoing Bureau International des Poids et Mesures(BIPM) key comparisons for the air kerma and absorbed dose to water of 60Coγ radiation.
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Received: 11 November 2015
Published: 31 May 2016
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2016, Vol. 37 
