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Light Scattering Probes of the H + H 2 Reaction
Author(s) -
Krause Jeffrey L.,
Shapiro Moshe
Publication year - 1989
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.198900053
Subject(s) - chemistry , raman scattering , rayleigh scattering , degenerate energy levels , scattering , spectral line , atomic physics , raman spectroscopy , resonance (particle physics) , x ray raman scattering , laser , coherent anti stokes raman spectroscopy , molecular physics , analytical chemistry (journal) , optics , physics , quantum mechanics , astronomy , chromatography
We present calculated Raman and CARS (coherent anti‐Stokes Raman scattering) spectra of the collinear H + H 2 reaction. These spectra, obtained by detuning the laser frequencies from all H 2 absorptions, show strong enhancements as the collision energy on the ground state potential energy surface is scanned through a reactive scattering resonance. We also demonstrate that the Rayleigh scattering and degenerate four‐wave mixing spectra show enhancements greater by orders of magnitude than the corresponding Raman and CARS peaks. The experiments suggested in this paper offer a unique, direct method for obtaining information about the vibrational dynamics of the transition state of chemical reactions.