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22 April 1993 Half-collision studies of singlet-to-triplet energy transfer: action spectroscopy and predissociation dynamics of electronically excited Cd H2 and Cd D2 complexes
Ingvar Wallace, David J. Funk, John G. Kaup, Solomon Bililign, Michael D. Morse, William H. Breckenridge
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Proceedings Volume 1858, Laser Techniques for State-Selected and State-to-State Chemistry; (1993) https://doi.org/10.1117/12.143091
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States
Abstract
The Cd(DOT)H2 and Cd(DOT)D2 van der Waals complexes have been synthesized by expanding cadmium vapor and He/H2 mixtures into a supersonic free jet. The `half-collision' process, Cd(5s5p 1P1)(DOT)H2 yields Cd(5s5p 3PJ) + H2, was studied by fixing a probe dye laser pulse (delayed 10 ns) onto one of the Cd(5s6s 3S1 $IMP 5s5p 3PJ) transitions while exciting the Cd(DOT)H2(Cd(DOT)D2) complex with a pump dye laser pulse tuned across frequencies near that of the free Cd(5s5p 1P1 $IMP 5s5s 1S0) atomic transition. When the probe laser was tuned to detect Cd(5s5p 3P2), an action spectrum to the red of the atomic transition was obtained for Cd(DOT)H2, consisting of a broad continuum superimposed upon which was an anharmonic series of vibrational transitions with discernible, blue-shaded rotational structure. A similar spectrum was recorded for Cd(DOT)D2, except that only very broadened blue-shaded rotational structure was observed.
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Ingvar Wallace, David J. Funk, John G. Kaup, Solomon Bililign, Michael D. Morse, and William H. Breckenridge "Half-collision studies of singlet-to-triplet energy transfer: action spectroscopy and predissociation dynamics of electronically excited Cd H2 and Cd D2 complexes", Proc. SPIE 1858, Laser Techniques for State-Selected and State-to-State Chemistry, (22 April 1993); https://doi.org/10.1117/12.143091
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KEYWORDS
Cadmium
Laser beam diagnostics
Computer simulations
Dye lasers
Energy transfer
Spectroscopy
Aerospace engineering
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