A semi-empirical model for a ~(90)Sr beta-particle transmission thickness gauge for aluminum alloys

摘要

A semi-empirical model is derived and tested for a ~(90)Sr beta-particle transmission thickness gauge for aluminum alloys. Monte Carlo simulation is also used to verify the forward scatter part of the model. The model accurately accounts for thickness as well as forward scatter, gamma-ray background, and the measurement interference of sample density and composition. The model parameters are obtained and the model is benchmarked with industrial experimental data from a ~(90)Sr(~(90)Y) gauge.