Calculation of the far-wing line broadening of the sodium D line induced by collisions with hydrogen atoms

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Abstract
Using ab initio potential curves and electronic transition moments we have calculated the far wings of the sodium D line emission spectrum broadened by collisions with hydrogen atoms. A classical–statistical model was used for this calculation. The calculated spectrum has two satellite peaks, one at 9683 cm−1, whose intensity diminishes with increasing temperature, and one at 21 641 cm−1, whose intensity increases with increasing temperature.