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Published 1983 | Published
Journal Article Open

Picosecond-jet spectroscopy and photochemistry. Energy redistribution and its impact on coherence, isomerization, dissociation and solvation


The development of the picosecond-jet technique is presented. The applications of the technique to the studies of coherence (quantum beats), photodissociation, isomerization and partial solvation of molecules in supersonic-jet beams are detailed with emphasis on the role of intramolecular energy redistribution. Experimental evidence for intramolecular threshold effect for rates as a function of excess molecular energy is given and explained using simple theory for the redistribution of energy among certain modes. Comparison with R.R.K.M. calculation is also made to assess the nature of the statistical behaviour of the energy redistribution.

Additional Information

© Royal Society of Chemistry 1983. Received 22nd December, 1982. This work was supported by grants from the National Science Foundation (CHE8112833 and DMR8105034). I thank Prof. R. Marcus and Prof. J. Hopfield for very enlightening discussions. I would also like to acknowledge the dedicated efforts of William Lambert, Peter Felker, Joe Perry and Jack Synge.

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