Band Shape of the Collision-Induced Infrared Absorption by Rare Gas Mixtures

概要

論文の詳細を見る
Band shapes of the collision-induced infrared absorption by rare gas mixtures, He-Ne, He-A and Ne-A, at 300゜K were calculated on the basis of the exponential interaction potential model. In this model we assumed the interatomic interaction as V=εe^<-r/l>. The induced dipole moment was assumed as μ=μ_0e^<-r/ρ>r/r. (We followed Van Kranendonk and other's idea.) Here r is the relative position vector between the centers of two atoms of different species and r is its magnitude. Here, ε, l, μ_0 and ρ are constants dependent on the combination of rare gas species. The relation, ρ=2l, was chosen to explain experimental results. In the case of He-A mixture, band shapes were calculated at 150゜K and 600゜K, too. From these results it was inferred that the half-width of the absorption is proportional to √<T>. Further we estimated the magnitude of induced dipole moment at the classical turning point γ_t(300゜K) ; μ(r_t)=3.1×10^<-2> Debye (He-Ne), 5.5×10^<-2> (He-A), 2.0×10^<-1> (Ne-A). Total intensities were estimated in the above-mentioned cases.
理論物理学刊行会の論文
1965-04-25