Sub-Doppler resolution infrared molecular-beam spectroscopy. Stark effect measurement of the dipole moment of hydrogen fluoride and hydrogen cyanide in excited vibrational states

Abstract

Sub-Doppler beam-calorimetric infrared spectroscopy is used to determine the dipole moments of hydrogen fluoride and hydrogen cyanide in vibrationally excited states. For the former µ₁= 1.872 ± 0.003 D while for the latter µ₀₀₁= 3.012 ± 0.002 D. The results for hydrogen fluoride are used to revise the literature value of µ_e for this molecule to 1.803 ± 0.002 D.