Extreme sensitivity of corrugation strength on diffraction resonance line-shapes for the gas-surface system He (21 meV)/Cu (115)

Abstract

An example of an isolated resonance with highly non-Lorentzian line-shape has been found for the gas-surface diffraction system He(2 I meV)/Cu( 1 15). When the corrugation strength parameter for the surface is very slightly vaned, the signature of the narrow resonance structure shifts. 0