Irradiance distribution in the image of a tube electrothermal atomizer

Abstract

An algorithm is proposed that allows the calculation of irradiance distribution in the image of a three-dimensional emitter formed by an imaging mirror. The approach is based on a rigorous ray-tracing algorithm supplemented with calculation of radiant flux transferred along each ray. Based on the algorithm, a computer program has been developed to model image formation of a tube electrothermal atomizer in a conventional atomic absorption spectrometer. Image formation of an isothermal and non-isothermal furnaces with and without platform has been considered. The effect of the atomizer misalignment on the irradiance distribution in the image has been modeled. © 1997 Elsevier Science B.V.