Dynamic van der waals interaction between atom and cold wall

G. V. Dedkov, A. A. Kyasov

Kabardino-Balkar State University, Nal'chik

Abstract: A dynamic potential of the van der Waals interaction between a neutral atom (sodium) and a metal (gold) wall is calculated for the atom moving parallel to the surface at a velocity within 0.5–5 Bohr units. The results show that the absolute value of the interaction potential at small (0.3–3 nm) distances from the wall significantly decreases as compared to the static van der Waals potential. As the velocity decreases and/or the distance from the wall increases, the interaction potential asymptotically tends to the static values.

Received: 03.02.2011

 English version: Technical Physics Letters, 2011, 37:7, 614–616

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