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Published November 18, 1983 | public
Journal Article

Observation of restricted IVR in large molecules: Quasi-periodic behavior, phase-shifted and non-phase-shifted quantum beats


The concept of phase-shifted quantum beats in large molecules is developed. Measurements are reported for jet-cooled anthracene excited by a 15 ps pulse to S_1 + 1420 cm^(−1). The results represent the direct observation, in the time domain, of vibrational energy flow within specific sets of modes in the molecule. The importance of the results to intramolecular vibrational-energy redistribution (IVR) and quasi-periodic behavior is discussed.

Additional Information

© 1983 North-Holland. Received 19 August 1983; in final form 22 August 1983. This material is based upon work supported by the National Science Foundation under Grant No. DMR-8105034 and Grnat. No. CHE-8211356. We wish to thank Professor R. Marcus for many enlightening discussions, especially on the quasi-periodic behavior.

Additional details

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October 20, 2023