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    STUDIA PHYSICA - Issue no. 1 / 2013  
         
  Article:   RADIOMETRIC DETERMINATION OF POTASSIUM-40 IN SOILS BY γ RADIATION MEASUREMENTS.

Authors:  . 		 
       
         
  Abstract:   The paper presents a simple method for measuring K-40 from soil using a NaI(Tl) detector enclosed in lead shield. The lowered content of potassium points out on the soil degradation related to the invasive plants. Attention must be paid to the possible interference of gamma radiation emitted by K-40 with the gamma radiation emitted by 228Ac, a descendent of 232Th from soil.

Keywords: K-40, γ- radioactivity, soil degradation 		 
         
     
         
         
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