Low-energy inelastic collisions of OH radicals with He atoms and D$ 2$ molecules - Physics > Atomic PhysicsReport as inadecuate




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Abstract: We present an experimental study on the rotational inelastic scattering of OH$X^2\Pi {3-2}, J=3-2, f$ radicals with He and D$ 2$ at collision energiesbetween 100 and 500 cm$^{-1}$ in a crossed beam experiment. The OH radicals arestate selected and velocity tuned using a Stark decelerator. Relativeparity-resolved state-to-state inelastic scattering cross sections areaccurately determined. These experiments complement recent low-energy collisionstudies between trapped OH radicals and beams of He and D$ 2$ that aresensitive to the total elastic and inelastic cross sections Sawyer \emph{etal.}, \emph{Phys. Rev. Lett.} \textbf{2008}, \emph{101}, 203203, but for whichthe measured cross sections could not be reproduced by theoretical calculationsPavlovic \emph{et al.}, \emph{J. Phys. Chem. A} \textbf{2009}, \emph{113},14670. For the OH-He system, our experiments validate the inelastic crosssections determined from rigorous quantum calculations.



Author: Moritz Kirste, Ludwig Scharfenberg, Jacek Kłos, François Lique, Millard H. Alexander, Gerard Meijer, Sebastiaan Y.T. van de Mee

Source: https://arxiv.org/







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