Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (4): 40201-040201.doi: 10.11889/j.0253-3219.2017.hjs.40.040201

• LOW ENERGY ACCELERATOR, RAY AND APPLICATIONS •     Next Articles

Uncertainty evaluation of rapid measurement of radon exhalation rate

LI Zhiqiang1,2, XIAO Detao2, ZHAO Guizhi2, SHAN Jian2, WU Xijun2, ZHOU Qingzhi2   

  1. 1 School of Physics and Electronic Engineering, Hengyang Normal University, Hengyang 421008, China;
    2 School of Nuclear Science and Technology, University of South China, Hengyang 421001, China
  • Received:2016-11-26 Revised:2017-01-17 Online:2017-04-10 Published:2017-04-07
  • Supported by:

    Supported by National Natural Science Foundation of China (No.11475082, No.11375083), Key Project of Hunan Provincial Department of Education(No.16A028), Introduction of Talent Research Projects of Normal University (No.16D02), Industry University Research Project of Normal University(No.16CXYY05)

Abstract:

Background: Rapid measurement of radon exhalation rate is influenced strongly by external environmental factors. Purpose: This study aims to scientifically evaluate the accuracy of the measured result of radon exhalation rate according to the concept of uncertainty. Methods: A theoretical analytical model was estimated to study the measurement method of radon exhalation rate. The origin of the uncertainty was analyzed and employed to evaluate the accuracy of the result. Results: The result of the relative synthesis standard uncertainty diverges within 12% when the rapid measurement is applied on the standard device of the University of South China with a radon exhalation rate of 0.39-2.62 Bq·m-2·s-1 in 105 min. Conclusion: This study provides a new method to evaluate the rapid determination of radon exhalation standard device.

Key words: Radon exhalation rate, Rapid measurement, Evaluation of uncertainty

CLC Number: 

  • TL816.2