DETERMINATION OF THE TENTH VALUE LAYER OF LEAKAGE RADIATION ATTENUATION FROM MEDICAL LINEAR ACCELERATORS WITH THE ENERGY OF 6 MEV

Abstract

Introduction. The article addresses the significant differences observed in the tenth-value layers (TVL) of leakage radiation attenuation in concrete for medical linear accelerators (linacs) between internationally recognized methodologies of the National Council on Radiation Protection and Measurements (NCRP) and the International Atomic Energy Agency (IAEA).

Methods. These differences have implications for the biological protection calculations. The study aims to determine the TVL for leakage radiation from 6 MeV medical linacs using the Monte-Carlo method.

Results. The study identifies that for an average concrete wall thickness of 1.5 meters, the TVL equals approximately 273.69 mm.

Conclusions. This value 273.69 mm is consistent with the IAEA's value of 279 mm. The study's findings provide a more realistic TVL value for leakage radiation, which aligns closely with the IAEA's data, thus offering a reliable reference for designing radiation protection in medical facilities using linacs.

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