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Published on: January 30, 2020
Assessing CZT detector performance for environmental radioactivity investigations
Rubina Rahman1, A J Plater, P J Nolan
1Department of Geography, University of Liverpool, Roxby Building, L69 7ZT Liverpool, UK. rrahman@liv.ac.uk
Abstract:
Cadmium zinc telluride (CdZnTe or CZT) is the leading semiconductor detector for gamma spectroscopy at room temperature. In the present study, a coplanar-grid CZT detector was used for gamma-ray measurements of environmental radioactivity on a contaminated saltmarsh sediment core in comparison with results from a coaxial high-purity germanium detector to assess their comparative performance. The findings reveal that the CZT performs well for both (241)Am and (137)Cs measurements over a broad range of activities, despite limited detector efficiency, and can be used to good effect in the study of environmental radioactivity in contaminated estuarine settings.
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