Determination of derivatives of the polarizability anisotropy in diatomic molecules

Abstract

Measurements of the relative intensities of O(J) and S(J) lines in the vibrational Raman spectra of H₂, D₂ and N₂ are reported. Using the numerical procedures and anharmonic constants presented in Part I, values are obtained for ratios of derivatives of the polarizability anisotropies γ = α_∥ - α_⊥. For H₂ and D₂,

and

For N₂, γ₁/γ₀ = 2·63 ± 0·29. The value of γ₁/γ₀ for molecular hydrogen is in agreement with that obtained by Asawaroengchai and Rosenblatt.