Quantum studies of light particle trapping, sticking, and desorption on metal and graphite surfaces.

摘要: A quantum mechanical formalism capable of describing the scattering, trapping, sticking, and desorption an atom from a moving corrugated surface is presented. While instantaneous particle-bath interaction assumed to be weak, particle bath can exchange energy over long periods time. We have explored trapping trapping-relaxation-sticking He on Cu(110) H graphite(0001). Higher substrate temperatures generally lead increased but higher rate eventually leads less, or zero at times. In both cases, we observe that in diffraction-mediated selective adsorption resonances enhance sticking low incident energies. trapped resonance, relax toward ground state gas-substrate attractive well. If binding larger than amount atom’s motion parallel surface, it remains stuck times, sufficiently temperatures. find probabilities order 1% very energies for systems. vicinity this increase by several percent, depending size corrugation.