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- W2280607539 abstract "An atomic Cr beam has been excited with a cw dye laser to the /sup 7/P/sup 0//sub 4/ and /sup 7/P/sup 0//sub 3/ states in a beam-gas study of intramultiplet mixing transitions between these states and to the /sup 7/P/sup 0//sub 2/ state. Absolute cross sections for these transitions have been found for the collision partners He, Ar, H/sub 2/, D/sub 2/, N/sub 2/, CO, O/sub 2/, N/sub 2/O, NH/sub 3/, and C/sub 2/H/sub 4/ by comparison of fluorescence intensity of laser excited and collisionally excited states. Cross sections are large in all cases, being larger than gas kinetic for NH/sub 3/, and comparable to gas kinetic for N/sub 2/, CO, and C/sub 2/H/sub 4/. Smaller cross sections for the others may be due to competing reactions. Time-of-flight measurements using a mechanically chopped Cr beam have yielded the velocity dependence of cross sections. Very little variation with relative velocity is found. Comparisons have been made for Cr scattering with He and Ar of experimental relative cross sections and velocity dependence with predictions of radial and Coriolis coupling models for nonadiabatic processes. Neither model alone can explain the observations. An application of the principle of microscopic reversibility to the N/sub 2/more » and CO time-of-flight results indicates that product energy partitioning in translation and rotation in a thermal experiment is quite similar to that of the reactants.« less" @default.
- W2280607539 created "2016-06-24" @default.
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- W2280607539 date "1984-04-01" @default.
- W2280607539 modified "2023-09-23" @default.
- W2280607539 title "Intramultiplet mixing collisions of chromium 3d/sup 5/4p /sup 7/P/sup 0//sub J/ with gases. Absolute cross sections and velocity dependence" @default.
- W2280607539 hasPublicationYear "1984" @default.
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