Alternative test conditions of beta - gamma monitors in beta radiation fields

Abstract

An extrapolation chamber and the beta radiation secondary standard system of the Calibration Laboratory of São Paulo, with sources of , were used to verify the influence of the beam flattening filter on the radiation field. Extrapolation curves, calibration and transmission factors were obtained with and without the presence of the beam flattening filter, in order to study the possibility of establishing alternative test conditions of beta - gamma instruments.