Efficient sub 100nm focusing of hard x rays
2005; American Institute of Physics; Volume: 76; Issue: 6 Linguagem: Inglês
10.1063/1.1928191
ISSN1527-2400
AutoresO. Hignette, Peter Cloetens, G. Rostaing, Pascal Bernard, Ch. Morawe,
Tópico(s)X-ray Spectroscopy and Fluorescence Analysis
ResumoAn x-ray beam with energy of 20.5keV has been efficiently focused down to a spot size as small as 90nm×90nm by a Kirkpatrick–Baez reflecting mirrors device. The first mirror, coated with a graded multilayer, plays both the role of vertical focusing device and monochromator, resulting in a very high flux (2×1011photons∕s) and medium monochromaticity (ΔE∕E∼10−2). Evaluation of the error contributions shows that the vertical focus is presently limited by the mirror figure errors, while the horizontal focus is limited by the horizontal extension of the x-ray source. With a gain in excess of a few million, this device opens up new possibilities in trace element nanoanalysis and fast projection microscopy.
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