GAMMA REFERENCE FIELD OF (_^137)Cs SOURCE AT THE MILITARY INSTITUTE OF CHEMICAL AND ENVIRONMENTAL ENGINEERING

Abstract

This paper presents the determination of the conventional true values of dose rates (i.e., ambient dose rate - , personal dose rate - ) in the gamma reference field of a  source at the Military Institute of Chemical and Environmental Engineering. The conventional true values of ,  were determined at various distances from the source center by three different approaches (i.e., by Monte Carlo simulations using MCNP6 code, theoretical calculations based on the  source activity, and measurements using a calibrated ion chamber). The values of  and  obtained from these three approaches show the difference within 12% with the uncertainties within 13%. The establishment of this gamma reference field was complied with the international criteria ISO 4037.