Abstract

We examine the linear electrodynamics arising from ion–atom collision-induced absorption. For this situation, induced absorption is achieved by means of long-range electrostatic forces, and the resulting spectral lines are relatively intense, symmetrical, and narrow. As a specific application, we examine the 3P01S0 forbidden transition of Sn, which is induced to absorb by collisions with I. The resultant lines are of the order of 15 cm−1 wide, and the collision-induced absorption coefficienty is 0.45%/cm per Torr of Sn and per 0.1 Torr of I.

© 1983 Optical Society of America

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