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Large-distance refocusing of a submicrometre beam from an X-ray waveguide (Articolo in rivista)

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Large-distance refocusing of a submicrometre beam from an X-ray waveguide (Articolo in rivista) (literal)

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S.Lagomarsino, V.Mocella, I.Bukreeva, A.Surpi, T.Bigault, A.Cedola (2006)
Large-distance refocusing of a submicrometre beam from an X-ray waveguide
in Journal of synchrotron radiation
(literal)

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CNR, IFN, Rome, I-00156 Italy; CNR, IMM, Sez Napoli, Naples, I-80131 Italy; European Synchrotron Radiat Facil, Grenoble, F-38043 France. (literal)

Titolo

Large-distance refocusing of a submicrometre beam from an X-ray waveguide (literal)

Abstract

Among the several available X-ray optics for synchrotron radiation producing micrometre and submicrometre beams with high intensity, the X-ray waveguide (WG) can provide the smallest hard X-ray beam in one direction. A drawback of this optics is that, owing to the divergence at the exit, a nanometre-sized spot on the sample can only be obtained if this is within a few micrometres of the WG exit. Another limitation is that in planar WGs the beam is compressed in only one direction. Here, using a dynamically bent elliptical Si/Pt mirror, the guided X-ray beam has been refocused at similar to 1 m from the waveguide exit. The large working distance between the device and the submicrometre focus leaves some space for sample environment (vacuum chamber, furnace, cryostat, magnets, high-pressure device etc.) and allows cross-coupled geometries with two WGs for efficient compression in two directions. (literal)

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