Abstract
The harsh environmental conditions in the marine environment pose variousconstraints on developing efficient instruments to carry out long-term, in situradioactivity measurements. In addition, the strong attenuation of γ-raysin the water medium, makes remote sensing of such radiation a challenging task.In the present work, we report on the efforts to find the optimal characteristicsand deployment scenarios of a new prototype γ-ray instrument based on asmall-size CZT crystal enclosed in seal-tight housing to be deployed for operationin large depths. Lab experiments and detailed Monte Carlo simulations were combinedto validate the actual crystal dimensions, determine its efficiency and energyresolution, as well as establish the minimum detectable activity values of theinstrument in different configurations and scenarios.
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