Tsabaris C, Bagatelas C, Dakladas Th, Papadopoulos C T, Vlastou R, Chronis G T
Hellenic Centre for Marine Research, Institute of Oceanography, P.O. Box 712, GR-19013 Anavyssos, Greece.
Appl Radiat Isot. 2008 Oct;66(10):1419-26. doi: 10.1016/j.apradiso.2008.02.064. Epub 2008 Feb 19.
A new detection system named "KATERINA" is developed and applied for measuring marine radioactivity using NaI(Tl) as a crystal. This apparatus is designed for qualitative and quantitative radionuclide detection in the marine environment with maximum depth of deployment 400 m. A detailed study for the enclosure of the system and for the electronics development is performed. The system offers volumetric activities in Bq/m(3) using the marine efficiency calibration, which is measured by dilution of three reference sources ((99m)Tc, (137)Cs, and (40)K) in a special tank. The calibration procedures for energy, energy resolution and efficiency were analyzed with particular attention to the factors that affect the calibration parameters. The underwater detector is tested in the field for acquiring radon daughters ((214)Pb and (214)Bi) in a region where submarine groundwater discharge exists in the coastal zone.
一种名为“卡特琳娜”的新型检测系统被研发出来，并应用于使用碘化钠（铊）晶体测量海洋放射性。该仪器设计用于在海洋环境中进行定性和定量放射性核素检测，最大部署深度为400米。对系统的外壳和电子设备开发进行了详细研究。该系统通过海洋效率校准提供以贝克勒尔每立方米（Bq/m³）为单位的体积活度，该校准是通过在一个特殊水箱中稀释三种参考源（锝-99m、铯-137和钾-40）来测量的。分析了能量、能量分辨率和效率的校准程序，特别关注影响校准参数的因素。水下探测器在实地进行了测试，以获取沿海地区存在海底地下水排放区域的氡子体（铅-214和铋-214）。
