Stark-Zeeman Effects on Asymmetric Top Molecules. Formaldehyde H₂CO

Abstract

The combined Stark-Zeeman effects for asymmetric top molecules with no accidental degeneracies are studied by perturbation treatments. The theory was applied successfully to the analysis of the experimental results of Stark-Zeeman effect on the microwave spectrum of formaldehyde H₂CO. By the influence of the electric field perpendicular to the magnetic field, split components of the transition 2₁₁→2₁₂ which, in the magnetic quantum number M, correspond to ΔM=±3 were observed. These components allowed a precise determination of the molecular g-factor for this transition.