Design of a calibration system for radioactive aerosol monitor
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A calibration system was designed to meet the calibration requirement of the radioactive aerosal monitors. The system consists of a radioactive aerosol generation unit, a dilution and mixing unit, a sampling and measuring unit, a purification unit and an automatic control unit. The commonly-used α and β radioactive solutions Am(NO3)3 and CsCl were selected to prepared different concentrations of monodisperse radioactive aerosol. After testing the calibration system, it was determined that the measurement uncertainty of the α and β efficiency calibration factors taken by the system for the radioactive aerosol monitor was 2.8% and 2.6%, respectively.
KeywordsRadioactive aerosol Calibration Detection efficiency
This work was supported by the Natural Science Foundation of Chinese Program (No. 41804114), Engineering Research Center of Nuclear Technology Application (Ministry of Education No. HJSJYB2014-8) and Shenyang Science and Technology Bureau (No. 18-013-0-17). The authors would like to express thanks to the China Institute of Atomic Energy for its support of this work.
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