Applicability limits of Beer’s law for dispersion media with a high concentration of particles

This study analyzes the values of volume concentrations of scatterers at which radiation extinction in dispersion media obeys Beer's law. The dependence of the maximum particle concentration at which Beer's law holds on the properties of the dispersion medium is investigated. It is shown that the maximum concentration is strongly dependent on the scatterers' parameters and varies over a wide range, from tenths to tens of percent.