Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

The photodissociation dynamics of some alkali halides are explored via the method of femtosecond transition-state spectroscopy (FTS). The alkali halide dissociation reaction is influenced by the interaction between the covalent and the ground state ionic potential energy surfaces (PES), which cross at a certain internuclear separation. Depending upon the adiabaticity of the PES, the dissociating fragments may be trapped in a well formed by the avoided crossing of these surfaces. Here, we detail the FTS results of this class of reactions, with particular focus on the reaction of sodium iodide: NaI*→[Na---I]°* →Na+I. As in our first report [T. S. Rose, M. J. Rosker, and A. H. Zewail, J. Chem. Phys. 88, 6672 (1988)], we observe the dynamical motion of the wave packet along the reaction coordinate and the crossing between the covalent and ionic surfaces. The studies presented here characterize the effects of various experimental parameters, including pump and probe wavelengths, on the dynamics of the dissociation and its detection. Comparisons of the results with classical and quantum mechanical calculations are also presented.

Bibliography

Rose, T. S., Rosker, M. J., & Zewail, A. H. (1989). Femtosecond real-time probing of reactions. IV. The reactions of alkali halides. The Journal of Chemical Physics, 91(12), 7415–7436.

Authors 3
  1. Todd S. Rose (first)
  2. Mark J. Rosker (additional)
  3. Ahmed H. Zewail (additional)
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Dates
Type When
Created 23 years, 1 month ago (July 26, 2002, 9:12 a.m.)
Deposited 1 year, 6 months ago (Feb. 10, 2024, 5:51 a.m.)
Indexed 1 month ago (Aug. 2, 2025, 12:34 a.m.)
Issued 35 years, 8 months ago (Dec. 15, 1989)
Published 35 years, 8 months ago (Dec. 15, 1989)
Published Print 35 years, 8 months ago (Dec. 15, 1989)
Funders 0

None

@article{Rose_1989, title={Femtosecond real-time probing of reactions. IV. The reactions of alkali halides}, volume={91}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.457266}, DOI={10.1063/1.457266}, number={12}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Rose, Todd S. and Rosker, Mark J. and Zewail, Ahmed H.}, year={1989}, month=dec, pages={7415–7436} }