Features of the resonant interaction of moving neutral atoms and clusters with superlattice surface

Selective Interaction of Moving Neutral Particles with Modulated Surface and the Mechanism of Controlled Surface Nanofabrication

“…As shown in [10,11], these potentials can contribute to surface and volume channeling of neutral particles and, hence, additional control of particles motion.…”

“…We now calculate the meanings of the values in the formula (11) in the case of the motion of the hydrogen atom over the surface of an ionic crystal. Transition frequency between the ground state with the wave function ψ 1 ≡ ψ 100 (r) and the first excited state with the wave function ψ 2 ≡ ψ 21,−1 (r, θ, ϕ) is equal to ω 21 = (ϵ 2 − ϵ 1 )/ℏ = 3e 2 /8ℏa 0 , where a 0 -the Bohr radius.…”

“…Accordingly, the total probability of spontaneous transition between the levels of ϵ 2 and ϵ 1 is equal to γ = 4d 2 21 ω 3 21 /3ℏc 3 [1]. Substituting these values into the formula (11) and choosing an ionic crystal with a sufficiently large value of the ionicity degree α ≈ 0.96 (see, for example, the crystal RbF [7]), we obtain the graph of the function ⟨V (x, v)⟩ shown in Fig. 2. b) Another situation arises at neutral atoms motion near charged crystallographic planes (for example, (100) planes in crystals with a blende structure [5]) constructed of ions of one kind.…”