title: Efficiency calibration and minimum detectable activity concentration of a real-time UAV airborne sensor system with two gamma spectrometers.
abstract: A small-sized UAV (NH-UAV) airborne system with two gamma spectrometers (LaBr3 detector and HPGe detector) was developed to monitor activity concentration in serious nuclear accidents, such as the Fukushima nuclear accident. The efficiency calibration and determination of minimum detectable activity concentration (MDAC) of the specific system were studied by MC simulations at different flight altitudes, different horizontal distances from the detection position to the source term center and different source term sizes. Both air and ground radiation were considered in the models. The results obtained may provide instructive suggestions for in-situ radioactivity measurements of NH-UAV.
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; Jiangsu Key Laboratory of Nuclear Energy Equipment Materials Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China. Electronic address: tangxiaobin@nuaa.edu.cn.
authors.forename: Xiao-Bin
authors.initials: XB
authors.lastname: Tang
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Meng
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Ye
authors.initials: Y
authors.lastname: Cao
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Xi
authors.initials: X
authors.lastname: Huang
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Liang-Sheng
authors.initials: LS
authors.lastname: Wen
authors.affiliation: Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; Jiangsu Key Laboratory of Nuclear Energy Equipment Materials Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
authors.forename: Da
authors.initials: D
authors.lastname: Chen
keywords: Efficiency calibration; Minimum detectable activity concentration; Monte Carlo simulation; Nuclear accident