• R El-Asser

      Articles written in Pramana – Journal of Physics

    • Determination of thorium and uranium contents in soil samples using SSNTD’s passive method

      T A Salama U Seddik T M Dsoky A Ahmed Morsy R El-Asser

      More Details Abstract Fulltext PDF

      Thorium-to-uranium ratios have been determined in different soil samples using CR-39 and LR-115-II solid-state nuclear track detectors (SSNTDs). A calibration method based on determination of SSNTD registration sensitivity ratio for α-particles of thorium and uranium series has been developed. Thorium and uranium contents of the standard soil samples have been determined and compared with its known values. There is a good agreement between the results of this method and the values of standard samples. The method is simple, inexpensive, non-destructive and has a wide range of applications in environment, building materials and petroleum fields.

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