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IJPAP Vol.44(03) [March 2006] >


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
Igneous
Metamorphic rock
Issue Date: Mar-2006
Publisher: CSIR
IPC CodeH01J65/08
Abstract:  The radioactivity contents of various radionuclides in rocks play an important role in health physics and geo-scientific research. The naturally occurring radionuclides 226Ra, 232Th and 40K 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 (Bq/kg) in igneous and metamorphic rock samples from different locations in Egypt and Germany has been analysed. The concentration values of samples for 226Ra, 232Th and 40K 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.
Page(s): 209-215
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.44(03) [March 2006]

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