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- W2073311225 endingPage "8343" @default.
- W2073311225 startingPage "8332" @default.
- W2073311225 abstract "Collision-induced state-to-state molecular energy transfer between rovibrational states in the 12 700 cm-1 4νCH manifold of the electronic ground state Χ of acetylene (C2H2) is monitored by time-resolved infrared−ultraviolet double resonance (IR−UV DR) spectroscopy. Rotational J-states associated with the (ν1 + 3ν3) or (1 0 3 0 0)0 vibrational combination level, initially prepared by an IR pulse, are probed at ∼299, ∼296, or ∼323 nm with UV laser-induced fluorescence via the Α electronic state. The rovibrational J-states of interest belong to a congested manifold that is affected by anharmonic, l-resonance, and Coriolis couplings, yielding complex intramolecular dynamics. Consequently, collision-induced rovibrational satellites observed by IR−UV DR comprise not only regular even-ΔJ features but also supposedly forbidden odd-ΔJ features. A preceding paper (J. Phys. Chem. A 2003, 107, 10759) focused on low-J-value rovibrational levels of the 4νCH manifold (particularly those with J = 0 and J = 1) whereas this paper examines locally perturbed states at higher values of J (particularly J = 17 and 18, which display anomalous doublet structure in IR-absorption spectra). Three complementary forms of IR−UV DR experiments (IR-scanned, UV-scanned, and kinetic) are used to address the extent to which intramolecular perturbations influence the efficiency of J-resolved collision-induced energy transfer with both even and odd ΔJ." @default.
- W2073311225 created "2016-06-24" @default.
- W2073311225 creator A5003370378 @default.
- W2073311225 creator A5015123616 @default.
- W2073311225 creator A5045443736 @default.
- W2073311225 creator A5082861940 @default.
- W2073311225 date "2005-04-28" @default.
- W2073311225 modified "2023-10-16" @default.
- W2073311225 title "Rovibrational Energy Transfer in the 4ν<sub>CH</sub> Manifold of Acetylene Viewed by IR−UV Double Resonance Spectroscopy. 2. Perturbed States with <i>J</i> = 17 and 18" @default.
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