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Focusing a helium atom beam using a quantum-reflection mirror

MPS-Authors
/persons/resource/persons22066

Schewe,  H. Christian
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Zhao,  Bum Suk
Molecular Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21859

Meijer,  Gerard
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Schöllkopf,  Wieland
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Fulltext (public)

njp9_11_113030.pdf
(Any fulltext), 692KB

njp9_11_113030.pdf
(Publisher version), 702KB

Supplementary Material (public)
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Citation

Schewe, H. C., Zhao, B. S., Meijer, G., & Schöllkopf, W. (2009). Focusing a helium atom beam using a quantum-reflection mirror. New Journal of Physics, 11, 113030-1-113030-10. doi:10.1088/1367-2630/11/11/113030.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-F7A0-8
Abstract
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.