VIBRATIONAL EFFECTS IN THE HYDROXYL RADICAL BY MOLECULAR-BEAM ELECTRIC RESONANCE SPECTROSCOPY

The hyperfine A-doubling transitions of OH in the2∏½, J= 1/2 and 3/2 and in the2∏3/2, J=3/2 and 5/2 levels of the v = 1 and v = 2 excited vibrational states have been measured in a molecular beam electric resonance spectrometer. Vibrational effects in the deduced A-doubling and hyperfine structure constants have been determined. A comparison is made with ab initio calculations. © 1979 Taylor & Francis Group, LLC.