An Expression for the Atomic Fluorescence and Thermal-Emission Intensity under Conditions of Near Saturation and Arbitrary Self-Absorption.

摘要

An expression for the effect of self-absorption on the fluorescence and thermal emission intensities is derived by taking into account stimulated emission. A simple, idealized case is considered, consisting of a two level atomic system, in a flame, homogeneous with respect to temperature and composition, and uniformly illuminated by an external quasi-continuum radiation source. (Author)