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Title: Comparative study of the natural radioactivity of some selected rocks from Egypt and Germany
Authors: Ahmed, N K
Abbady, A
Arabi, A M El
Michel, R
Kamel, A H El
Abbady, A G E
Keywords: Radioactivity
Metamorphic rock
Issue Date: Mar-2006
Publisher: CSIR
Series/Report no.: H01J65/08
Abstract: <smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="country-region"><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"> The radioactivity contents of various radionuclides in rocks play an important role in health physics and geo-scientific research. The naturally occurring radionuclides <sup>226</sup>Ra, <sup>232</sup>Th and <sup>40</sup>K are the main sources of radiation in soil and rocks from which traditional building materials are derived. These radionuclides pose exposure risks externally due to their gamma-ray emissions and internally due to radon and its progenies, which emit alpha particles. The activity concentration (<i style="">B</i>q/kg) in igneous and metamorphic rock samples from different locations in Egypt and Germany has been analysed. The concentration values of samples for <sup>226</sup>Ra, <sup>232</sup>Th and <sup>40</sup>K were found in the range of 3.9 : 57.4, 3.2 : 53.4 and 202 : 1211 in Egypt and 5.1 : 76, 3.4 : 70 and 10 : 2070, respectively in Germany. Even though these radionuclides are widely distributed, their concentrations depend on the local geological conditions. </smarttagtype></smarttagtype>
Description: 209-215
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.44(03) [March 2006]

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