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Published March 14, 1985 | public
Journal Article

Ultrafast Molecular Relaxation of Isolated Stllbene: Measurements by Picosecond Pump-Probe Techniques


In this Letter, we report measurements of the picosecond relaxation time of trans-stilbene in S1 under collisionless conditions. By acurate determination of the zero-time in our picosecond pump-probe experiments we obtained r = 3 ± 0.5 ps, which is entirely consistent with our earlier measurements of IVR rates of stilbene in bulbs and beams. This establishes the molecular nature of the decay in these picosecond pump-probe multiphoton ionization (or mass spectrometry) experiments.

Additional Information

© 1985 American Chemical Society. Received: January 11, 1985. This work is supported by the National Science Foundation under Grant No. DMR-8105034. We thank Professor K. Eisenthal for fruitful discussions.

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