Natural Radioactivity Measurements of Basalt Rocks in Sidakan District Northeastern of Kurdistan Region-Iraq
The amounts of radioactivity in the igneous rocks
have been investigated; samples were collected from the total of eight
basalt rock types in the northeastern of Kurdistan region/Iraq. The
activity concentration of 226Ra (238U) series, 228Ac (232Th) series, 40K
and 137Cs were measured using Planar HPGe and NaI(Tl) detectors.
Along the study area the radium equivalent activities Raeq in Bq/Kg
of samples under investigation were found in the range of 22.16 to
77.31 Bq/Kg with an average value of 44.8 Bq/Kg, this value is much
below the internationally accepted value of 370 Bq/Kg. To estimate
the health effects of this natural radioactive composition, the average
values of absorbed gamma dose rate D (55 nGyh-1), Indoor and
outdoor annual effective dose rates Eied (0.11 mSvy-1) . and Eoed
(0.03 mSvy-1), External hazard index Hex (0.138) and internal hazard
index Hin(0.154), and representative level index Iγr (0.386) have been
calculated and found to be lower than the worldwide average values.
 Gwww.umich.edu/~radinfo/introduction/natural.html taken on
 Alias A. et al., The Malaysian Journal of Analytical Sciences, Vol. 12,
No. 1, (2008).
 Mahur A. K. et al., Indian journal of Pure & Applied Physics, Vol. 48,
July (2010), pp. 486-492.
 Yang Ya-Xin. et al., Applied Radiation and Isotopes, 63 (2005) 255-
 Jasaitis D., and Girgždys A., Journal of Environmental Engineering and
Landscape Management, Vol. XV, No. 1, (2007), pp. 313-7.
 Ward G.M., Johnson J.E., and Wilson D.W., Colorado Agricultural
Experiment Station, Vol. 81, No.7, (1966).
 Erbil Governorate Profile, Inter-Agency Information and Analysis Unit
(IAU), July (2009).
 Germanium Detectors, User-s Manual, Canberra Industries, Inc., (1989).
 Hassan H. I., and Mheemeed A. Kh., Damascus University Journal for
Basic Sciences Vol. 24, No. 2, (2008).
 Sujo L.C. et al., Journal of Environmental Radioactivity 77 (2004) 205-
 Diab H. M. et al., Journal of Nuclear and Radiation Physics, Vol. 3, No.
1, (2008), pp. 53-62.
 Harb S. et al., Proceedings of the 3rd Environmental Physics
Conference, 19-23 Feb. (2008), Aswan, Egypt.
 Bé M. -M. et al., Table of Radionuclides, Vol. 2-A=151 to 242, (2004).
 Bé M. -M. et al., Table of Radionuclides, Vol. 4-A=133 to 252, (2008).
 Auble R. L. et al., Nuclear Data Sheets, Vol. 21, No. 4, (1977).
 Tuli J. K., Nuclear Data Sheets, Vol. 49, No. 1, (1986).
 Maphoto K. P., M. Sc. Thesis, University of the Western Cape, South