Focusing a helium atom beam using a quantum-reflection mirror

Details Focusing a helium atom beam using a quantum-reflection mirror Focusing a helium atom beam using a quantum-reflection mirror

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009njph...11k3030s&link_type=abstract

New Journal of Physics, Volume 11, Issue 11, pp. 113030 (2009).

Physics

3

Scientific paper

We demonstrate one-dimensional (1D) focusing of a thermal helium atom beam by quantum reflection from a cylindrical concave quartz mirror at near-grazing incidence. The smallest width of the focus achieved is 1.8 μm, essentially limited by spherical aberration. The various effects that contribute to the finite focal width have been investigated. We propose to apply near-grazing reflection from two concave elliptical mirrors in a Kirkpatrick-Baez arrangement for two-dimensional (2D) focusing of a helium atom beam, paving the way for a helium atom microprobe.

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