Abstract

The total absorption due to two narrow, identical spectral lines, of equal strength and width, is computed as a function of two parameters, γ and σ, where γ characterizes the frequency distance of the two lines, while σ is proportional to the product of the number of absorbing particles (per unit volume) and the thickness of the absorbing layer. This represents the so-called “curves of growth,” for the case in question. Of special interest, besides the two limiting cases, γ→0 and γ→∞, is the influence of the overlapping effect for relatively small γ.

© 1956 Optical Society of America

Infrared Transmission of Synthetic Atmospheres.* II. Absorption by Carbon Dioxide

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Slit Function Effects in the Direct Measurement of Absorption Line Half-Widths and Intensities*†

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Equivalent Width Due to Two Overlapping Lines*

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