Sharpness of Some Rare-Gas Resonance Lines

Abstract

An investigation on the nature of krypton and argon resonance lines emitted from a low-pressure lamp has been made applying the sensitized photoionization technique and represented in terms of “sharpness.” Cowan and Dieke's self-absorption theory has given a good interpretation of the dependence of the nature of resonance lines on the rare-gas pressure. The approximate expressions for the total line intensity and the sharpness were obtained from their theory. The experimental results on the effect of neon acting as a foreign gas suggested that the broadening of resonance lines arised from the interaction between neon and rare-gas atoms, and this interaction was larger in the case of the argon resonance line.