Obliquity factors for 60 Co and 4, 10, and 18 MV x rays for concrete, steel, and lead and angles of incidence between 0 and 70 degrees.

Abstract

The attenuation of 60 Co gamma rays and photons of 4, 10, and 18 MV x-ray beams by concrete, steel, and lead has been studied using the Monte Carlo technique for angles of incidence 0, 30, 45, 60, and 70 degrees. Transmission factors have been determined down to <2x10(-5) in all cases. The results show that deviation from the obliquity factor increases with… (More)

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Cite this paper

@article{Biggs1996ObliquityFF, title={Obliquity factors for 60 Co and 4, 10, and 18 MV x rays for concrete, steel, and lead and angles of incidence between 0 and 70 degrees.}, author={Peter J. Biggs}, journal={Health physics}, year={1996}, volume={70 4}, pages={527-36} }