THE SCATTERING OF K AND Cs BY SEVERAL COMPOUNDS.
PURDUE UNIV LAFAYETTE IND PROJECT SQUID HEADQUARTERS
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The nonreactive scattering of K from C10H16, CH33CBr, SiCl4, Cl2, Br2, I2, ICl, CN2CCCN2, and Cs from HBr has been studied in experiments with crossed molecular beams. The primary alkali metal beam was velocity selected, and the scattered alkali metal was measured as a function of laboratory angle at a number of initial relative kinetic energies. Potential parameters are calculated from the rainbow scattering for K C10H16, CH33C Br, SiCl4, and Cs HBr and also from the supernumerary rainbows for K C10H16 and CH33CBr. An optical model analysis on KCH33CBr and Cs HBr yields information about threshold conditions for reaction, probability of reaction, and total reaction cross section as a function of relative energy. For system without rainbow scattering K halogens, CN2C CCN2 an optical analysis made with a simple form for the absorption function requires a gradual change from a van der Waals potential at very large distances of separation of reactants to a more attractive potential at smaller distances. This indicates a gradual electron transfer on approach of reactants rather than on abrupt electron jump. Author
- Physical Chemistry