Theoretical Calculation of Pressure-Broadened Atomic Line Profiles

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Abstract
An atomic line profile is theoretically calculated for various relative densities at two temperatures (666 and 800°K) under an adiabatic assumption, with a Lennard-Jones potential, and is compared with the experimental profile of the shorter-wavelength component of the resonance lines of cesium perturbed by xenon. The calculation predicts an appearance of one red satellite and two violet satellites as experimentally observed. Further, the result shows that the agreement between the pressure behavior of the theoretical line shape and that of the observed one is only qualitative, because the calculated satellite intensities are too weak. This disagreement is attributed to an inadequacy of the Lennard-Jones potential for calculating line-shapes under the present approximations.