SinglePhonon Energy Transfer between Molecular Beams and Solid Surfaces
Abstract
The quantummechanical lattice theory in thermalaccommodationcoefficient theory is approached from the same point of view as the lattice theory of neutron scattering and Mössbauer effects. Treating the surface atoms from a displacementfieldtheoretic point of view, rather than from the customary singleparticle point of view, is more consistent with other solidstate theories. Virtualphonon processes occurring in the field formulation give rise to a nontrivial modification in existing singlephonon accommodationcoefficient theories. This modification takes the form of a pseudoDebyeWaller factor. When the existing theoretical accommodation coefficients are modified by the pseudoDebyeWaller factor, it is found that the resulting accommodation coefficient, obtained herein, displays trends similar to experimental data for helium accommodation on tungsten.
 Publication:

Physical Review
 Pub Date:
 January 1967
 DOI:
 10.1103/PhysRev.153.759
 Bibcode:
 1967PhRv..153..759G