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The influence of preadsorbed K on the adsorption of PF3 on Ru(0001) studied by soft x-ray photoelectron spectroscopy
Soft-x-ray photoelectron spectroscopy (SXPS) is utilized to study the coadsorption of K and PF3 on Ru(0001) at 90 and 300 K. In the absence of K, PF3 adsorbs molecularly at both temperatures. In the p...
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Critical dynamics and phase-separation kinetics in dynamically asymmetric binary fluids: New dynamic universality class for polymer mixtures or dynamic crossover?
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On the low energy limits of inelastic molecule–surface scattering

J. Chem. Phys. 100, 5314 (1994); doi:10.1063/1.467196

Issue Date: 1 April 1994

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Eric R. Bittner
The James Franck Institute and the Department of Chemistry, The University of Chicago, Chicago, Illinois 60637
The zero energy scattering limit of inelastic molecule–surface scattering is studied within the context of a multiphonon expansion of the molecule–bath wave function. By assuming that at low scattering energies the expansion may be truncated at first order in the phonon operators, we derived a closed form solution to the Lippmann Schwinger equation for the scattering wave function which includes a nonlocal and energy dependent self-energy term which correctly incorporates virtual phonon transitions in the elastic channel. The closure relation results from the use of a discrete spectral ([script L]2) form of the inelastic channel Greens functions. We compute the zero energy limit of these wave functions and discuss the trapping and reflection of cold atoms from ultracold surfaces. Our results indicate that for realistic atom surface interactions the low energy limit of the sticking coefficient, s, can deviate markedly from the expected s[proportional]E1/2 behavior and is shown to approach a constant nonzero limiting value. This trend is consistent with recent experimental work involving the sticking of spin polarized hydrogen atoms on liquid He films. The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
History: Received 1 November 1993; accepted 17 December 1993
Permalink: http://link.aip.org/link/?JCPSA6/100/5314/1
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KEYWORDS and PACS

Keywords
PACS
  • 67.70.+n
    Quantum fluids and solids; liquid and solid helium Films (including physical adsorption)
  • 03.65.Nk
    Classical and quantum physics: mechanics and fields Quantum mechanics Nonrelativistic scattering theory
  • YEAR: 1994

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ISSN:
0021-9606 (print)   1089-7690 (online)
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