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Efficiency calibration of airborne γ-ray spectrometer using sourceless efficiency calibration method

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Abstract

Based on the exponential law of narrow beam γ ray and calculus principle, a numerical calculation model for sourceless efficiency calibration of airborne γ-ray spectrometer has been developed. Through experiments and simulations, it was found that the relative deviation between the efficiency of airborne γ-ray spectrometer with different surface sources and volume sources and the value of stimulation was within ± 1.5% when conducting low-attitude detection, and the relative deviation between the calculation results of infinite volume source containing 1460.8 keV or 2614.5 keV γ photons at the altitude of 90–150 m and the experimental values was 5.41–11.27%. The above experiments sufficiently proved that sourceless efficiency calibration model could be appropriate for the detection practice of airborne γ-ray spectrometry.

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Acknowledgements

This work was supported by the Natural Science Foundation of Chinese Program (No. 41804114), National Key R&D Program of China (No. 2017YFF0106503) and Engineering Research Center of Nuclear Technology Application (Ministry of Education Nos. HJSJYB2014-8 and HJSJYB2017-4). The authors would like to express thanks to the China Institute of Atomic Energy for its support of this work.

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  1. School of Nuclear Science and Engineering, East China University of Technology, 418 Guanglan Dr, Nanchang, 330013, Jiangxi, China

    Hexi Wu, Yibao Liu, Yujuan Liu, Qianglin Wei & Bo Yang

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  1. Hexi Wu
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  2. Yibao Liu
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  3. Yujuan Liu
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  4. Qianglin Wei
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  5. Bo Yang
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Correspondence to Hexi Wu.

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Wu, H., Liu, Y., Liu, Y. et al. Efficiency calibration of airborne γ-ray spectrometer using sourceless efficiency calibration method. J Radioanal Nucl Chem 322, 613–619 (2019). https://doi.org/10.1007/s10967-019-06717-0

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  • DOI: https://doi.org/10.1007/s10967-019-06717-0

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