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>Velocity dependence of rates for rotationally inelastic collisions in Naast;2ndash;Xe using velocity selection by Doppler shift
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Velocity dependence of rates for rotationally inelastic collisions in Naast;2ndash;Xe using velocity selection by Doppler shift
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机译：Velocity dependence of rates for rotationally inelastic collisions in Naast;2ndash;Xe using velocity selection by Doppler shift
We have measured the velocity dependence of rotational energy transfer (RET) rate constants for Naast;2(Athinsp;1Sgr;u+)ndash;Xe collisions over an order of magnitude range in relative kinetic energy. Measurements were made for initial rotational levelsji=16, 38, and 66 for four different values of Dgr;=jfminus;ji. The present data are analyzed in terms of the energy corrected sudden (ECS) scaling approximation and determine the velocity dependence of both the rsquo;rsquo;adiabatic correctionrsquo;rsquo; factor of the ECS theory, and the parameters a and ggr; which appear in the power law expression for the basis ratesklrarr;0(vr) =a(vr)lsqb;l(l+1)rsqb;minus;ggr;(vr), an expression shown to be valid at all relative velocities studied. These measurements were made in a gas cell using the velocity selection by Doppler shift (VSDS) technique. Full details of analysis and deconvolution procedures used to isolate the relative velocity dependence are given.
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