The portable contamination monitor is using 2 scintillator materials. For detection of alpha-radiation ZnS is used. For detection of beta and gamma radiation a plastic scintillator foil is used. The large area detector window is permeable for low energy alpha radiation like U-238 beta radiation like C-14 The thin window can be replaced easily by the user and measurements can be continued without much delay. The light flashes generated by the alpha or beta/gamma radiation can be separated by pulse analysis. The detected events are counted over time and displayed digitally in c/s, Bq or Bq/cm2. Nuclide specific sensitivity is calculated and alarm values are preprogrammed. Measurement results can be stored and transferred by RS 232 C.
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