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Gamma-ray exposure build-up factors of some brick materials in the state of Punjab

Published online by Cambridge University Press:  11 July 2013

V.P. Singh  and
N.M. Badiger
V.P. Singh
Affiliation:
Department of Physics, Karnatak University, Dharwad 580003, India Permanent address: Health Physics Section, Kaiga Atomic Power Station-3&4, NPCIL, Karwar 581400, India. email: kudphyvps@rediffmail.com
N.M. Badiger
Affiliation:
Department of Physics, Karnatak University, Dharwad 580003, India
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Abstract

The gamma-ray exposure build-up factors of raw materialsof bricks (soils and fly-ashes) in the state of Punjab were investigatedfor the photon energy range 0.015 to 15 MeV up to 40 mfp penetrationdepth by the geometrical progression (GP) method. Appreciable variationsin the exposure build-up factor (EBF) are noted for the raw materials.The EBFs of the raw materials of bricks change depending on thephoton energy, penetration depth and chemical composition. The build-up factorsare low at low and high photon energies, whereas they are very highin the medium-energy region. The peak energy of the EBF for soilsis 0.3 MeV and 0.2 MeV for fly ashes. The EBFs of the raw materialsof bricks are also compared with those of bricks of red mud andcommon brick materials. Common bricks were found to have the lowestgamma-ray EBF. This study should be useful for emergency preparednessplanning and emergency dose estimation for future planned nuclearpower plants in the state of Punjab.

Keywords

exposurebuild-up factorbrickbuildinggammaaccidentdosereactor
Type
Research Article
Information
Radioprotection , Volume 48 , Issue 4 , October 2013 , pp. 511 - 526
Copyright
© EDP Sciences, 2013

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