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Phys. Rev. A 36, 4107–4110 (1987)

Observation of Autler-Townes splitting in the multiphoton ionization of H2: Measurement of vibronic transition moments between excited electronic states

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Mark A. Quesada
Department of Chemistry, University of California, Santa Cruz, California 95064

Albert M. F. Lau
Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550

David H. Parker
Department of Chemistry, University of California, Santa Cruz, California 95064

David W. Chandler
Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550

See Also: Erratum

Received 18 May 1987; published in the issue dated October 1987

We report the first observation of Autler-Townes splitting in multiphoton ionization of molecules and its application to measure vibronic transition moments between excited electronic states. The effect was observed in the two-color, four-photon ionization of H2 via the resonant levels E, F1Σg+, v=6, J=1 and D1Πu, v=2, J=2. Calculations give good fits to the observed spectra. They yield a vibronic transition moment of 2.0±0.5 a.u. between the above excited states, in agreement with the ab initio value 1.97 a.u. calculated by Huo and Jaffe.

© 1987 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.36.4107
DOI:
10.1103/PhysRevA.36.4107
PACS:

See Also

Erratum: Mark A. Quesada, Albert M. Lau, David H. Parker, and David W. Chandler, Erratum: Observation of Autler-Townes splitting in the multiphoton ionization of H2: Measurement of vibronic transition moments between excited electronic states [Phys. Rev. A 36, 4107 (1987)], Phys. Rev. A 38, 5453 (1988).

 
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