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Ridged atomic mirrors and atomic nanoscope

D Kouznetsov1, H Oberst1, A Neumann2, Y Kuznetsova2, K Shimizu1, J-F Bisson1, K Ueda1 and S R J Brueck2

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Recent results on the reflection of waves from ridged mirrors are discussed. Numerical calculations, analytical estimates and the direct measurements of coefficient of specular reflection of atomic waves from solid-state mirrors are combined. The reflectivity is approximated as an elementary function of period L of ridges, their width ℓ, wavenumber K, grazing angle θ and effective depth w of the van der Waals potential. In a special case L = ℓ, the fit reproduces the reflectivity of flat surfaces. Our approximation allows us to optimize the L at given ℓ and estimate the maximum performance of a ridged mirror. Such a mirror is suggested as a focusing element for the nano-scale imaging system.


PACS

37.20.+j Atomic and molecular beam sources and techniques

03.75.Be Atom and neutron optics

34.35.+a Interactions of atoms and molecules with surfaces

34.20.Cf Interatomic potentials and forces

Subjects

Quantum gases, liquids and solids

Atomic and molecular physics

Dates

Issue 7 (14 April 2006)

Received 2 December 2005

Published 13 March 2006



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