海洋放射性现场探测谱仪的机械优化设计

doi:10.3976/j.issn.1002-4026.2021.04.004

Shandong Science ›› 2021, Vol. 34 ›› Issue (4): 21-25.doi: 10.3976/j.issn.1002-4026.2021.04.004

• Oceanographic Science, Technology and Equipment • Previous Articles Next Articles

The mechanical design optimization of a spectrometer for in situ marine radioactivity monitoring

FENG Xian-dong，ZHANG Yun-yan，ZHANG Ying-ying，WU Bing-wei，HOU Guang-li

Shandong Provincial Key Laboratory of Ocean Environmental Monitoring Technology， National Engineering and Technological Research Center of Marine Monitoring Equipment， Institute of Oceanographic Instrumentation,Qilu University of Technology ( Shandong Academy of Sciences )，Qingdao 266061， China

Received:2020-09-18 Online:2021-07-30 Published:2021-07-30

Abstract

Abstract: To improve the detection performance of an NaI (Tl) spectrometer for in situ marine radioactivity monitoring, Monte Carlo simulation and statistical calculation methods were used to study and analyze the effect of mechanical design of spectrometer package, material, and size on detection performance. Considering the requirements of gamma ray attenuation, sealing, pressure resistance, and corrosion resistance, the mechanical optimization design of the spectrometer and on-site detection experiments were conducted. The minimum detectable activity of the optimized spectrometer was approximately 0.30 Bq/L for 40K, and the relative error of measurement was 0.45%. This study has important guiding significance for the performance optimization design and field application of gamma spectrometers for in situ marine radioactivity monitoring.

Key words: radioactivity monitoring, gamma spectrometer, Monte Carlo calculation, optimal design, detection efficiency

CLC Number:

P716⁺.19

FENG Xian-dong, ZHANG Yun-yan, ZHANG Ying-ying, WU Bing-wei, HOU Guang-li. The mechanical design optimization of a spectrometer for in situ marine radioactivity monitoring[J].Shandong Science, 2021, 34(4): 21-25.

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The mechanical design optimization of a spectrometer for in situ marine radioactivity monitoring

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