ANTICROSSING RESONANCES IN THE FIR LMR SPECTRUM OF $FO_{2}$: A CLASSIC EXAMPLE

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1990

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Ohio State University

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We have detected strong laser magnetic resonance (LMR) spectra of the FO2 radical on two closely spaced laser lines around 919μm. The spectra show two distinct types of pattern, one has an extended progression of narrow resonances while the other exhibits an extremely strong, broad, doublet with an unsymmetrical lineshape. We have assigned these spectra following predictions of nearby zero field transitions using our earlier mm-wave results1. The patterns arise from a very complicated set of anticrossings involving seven different rotational levels and give information on the off diagonal elements of the spin-rotation and spin g-factor tensors. Although the observed spectra are complicated, it is likely that similar mechanisms will dominate the FIR LMR spectra of all heavier asymmetric top radicals

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1 M. Bogey, P. B. Davics, C. Demuynck, J. L. Destombes and T. J. Sears, Molec. Phys. 67 1033 (1989). Work at Brookhaven National Laboratory was carried out under contract DE-ACO2-76CH00016 with the U.S. Department of Energy and supported by its Division of Chemical Sciences, Office of Basic Energy Sciences.


Author Institution: Department of Chemistry, University of Cambridge; Department of Chemistry, Brookhaven National Laboratory; Department of Chemistry, MPI f""{u}r Stroemungsforschung

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http://hdl.handle.net/1811/18346

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Abstracts of OSU International Symposium on Molecular Spectroscopy 1990-1999