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Radiation Protection Dosimetry Advance Access originally published online on July 12, 2007
Radiation Protection Dosimetry 2008 128(3):382-385; doi:10.1093/rpd/ncm367
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Assessment of terrestrial gamma radiation doses for some Egyptian granite samples

A. M. El Arabi, N. K. Ahmed and K. Salahel Din*

Physics Department, Faculty of Science, South Valley University, Qena, Egypt

* Corresponding author: ksh272{at}yahoo.com

Received January 3, 2007, amended May 28, 2007, accepted June 14, 2007

External exposures of population to ionising radiation due to naturally occurring radionuclides in sixty-three granite samples from three different locations in south eastern desert of Egypt were considered in this article. Average outdoor gamma dose rates in air were 190, 290 and 330 nGy h–1 for Elba, Qash Amir and Hamra Dome granites, respectively. The corresponding doses in indoor air are 270, 400 and 470 nGy h–1, respectively. These average values give rise to annual effective dose (outdoor, indoor and in total) 0.24, 1.4 and 1.6 mSv for Elba granite. For Qash Amir and Hamra Dome granites the corresponding values were 0.35, 2 and 2.3 mSv and 0.41, 2.3 and 2.7 mSv, respectively.


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