Calculation of Spectral Line Shapes for General Pressures

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Abstract
A method of calculating spectral line shapes at arbitrary temperatures and pressures is developed. The analysis assumes that: The two-body interaction potential is known; the potentials add as scalars; the perturbers follow classical paths determined by the equations of motion; and the collisions are adiabatic. The resulting formulas are solved numerically, using interaction potentials which are appropriate for the interaction between argon and cesium metals. The calculation is carried out for relative densities up to 160. Calculated half-widths and line shifts agree with experimental data.