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| Comparison of Air Kerma in 60Co Gamma Rays |
| WANG Kun,ZHANG Hui,YANG Xiao-yuan,HU Jia-cheng,YANG Yuan-di |
| National Institute of Metrology, Beijing 100013, China |
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Abstract National Institute of Metrology organized the comparison for air kerma in 60Co gamma rays in China.There are 15 laboratories join the comparison.The results show that the comparison difference of air kerma rate in reference point is within 0.6%, and the comparison difference of calibration factor for air kerma of transfer chambers is within 0.8%.
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2011, Vol. 32 
