Calculations of the rates of spontaneous xenon atom transitions over the surface of nickel and onto a tungsten point of a scanning tunnel microscope

Frequencies of spontaneous xenon atom transitions from the surface of Ni onto a tungsten point of a scanning tunneling microscope, as well as over the surface of nickel are estimated using initial expressions of the theory of transient state and calculated surface of potential energy. Depths of potential holes, heights of barriers between neighboring holes and characteristic frequencies of normal oscillations in a hole and activated complex are calculated for Xe atom. Found values of frequencies of transitions was shown to be in line with classical limit at high temperatures calculated by Langevin dynamics method. The effect of anharmonism at high temperatures and the role of quantum effect at low temperatures were revealed. Dependence between frequencies of transitions and support-point distance is calculated