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  • 1 University Cadi Ayyad Nuclear Physics and Techniques Laboratory, Faculty of Science Semlalia B.P. S15 Marrakech Morocco
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Abstract  

Uranium and thorium contents in different drinking water samples have been evaluated by using CR-39 and LR-115 type II solid state nuclear track detectors (SSNTD) and calculating the probabilities for -particles to reach and be registered on the SSNTD films. A new method has been developed based on calculating the stopping powers of the studied material for the - and -particles emitted by the nuclei of the uranium and thorium series for evaluating - and -dose rates of the considered water samples. The influence of the soil nature of the aquifer on the alpha- and beta-doses in water samples has been investigated.