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Published October 8, 1993 | public
Journal Article

Femtochemistry at high pressures. The dynamics of an elemantary reaction in the gas—liquid transition region


An extension of femtochemistry to the gas—liquid transition region is reported for an elemantary reaction, the dissociation and recombination of iodine in supercritical argon reaching a density of 30.5 mol ℓ^(−1). Three phenomena are systematically studied in the range 0 to 2000 bar of argon: the change of the coherent nuclear motion with solvent density, the rate of predissociation, and the caging by the solvent. The approach offers a unique way for examining the dynamics in real time from the gas to the liquid density limit.

Additional Information

© 1993 Elsevier B.V. Received 2 August 1993. This work was supported by the National Science Foundation. We would like to thank Dr. Dirk Schwarzer of Professor J. Troe's group for helpful discussions and advice. We are grateful to Dr. Marcos Dantus for his valuable help in setting up the laser system in the initial stage of this work. ChL gratefully acknowledges a postdoctoral fellowship by the Deutsche Forschungsgemeinschaft, and JCW acknowledges the National Science Foundation for a Graduate Fellowship.

Additional details

August 20, 2023
October 20, 2023