Characterization of Pt-coated twin paraboloidal laboratory capillary high energy X-ray optics

Characterization of Pt-coated twin paraboloidal laboratory capillary high energy X-ray optics

Novel focusing optics composed of twin paraboloidal capillaries coated with Pt, for laboratory X-ray sources are presented and characterized. The optics are designed to focus the X-rays, resulting in an achromatic focused beam with photon energies up to 40 keV. The performance of the optics under di...

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Veröffentlicht in:Optics express 2023-11, Vol.31 (23), p.38840-38853
Hauptverfasser: Seret, Anthony, Kehres, Jan, Gundlach, Carsten, Lund Olsen, Ulrik, Friis Poulsen, Henning, Juul Jensen, Dorte, Cordier, Mark, Stripe, Benjamin, Yun, Wenbing, Zhang, Yubin
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container_end_page 38853
container_issue 23
container_start_page 38840
container_title Optics express
container_volume 31
creator Seret, Anthony
Kehres, Jan
Gundlach, Carsten
Lund Olsen, Ulrik
Friis Poulsen, Henning
Juul Jensen, Dorte
Cordier, Mark
Stripe, Benjamin
Yun, Wenbing
Zhang, Yubin
description Novel focusing optics composed of twin paraboloidal capillaries coated with Pt, for laboratory X-ray sources are presented and characterized. The optics are designed to focus the X-rays, resulting in an achromatic focused beam with photon energies up to 40 keV. The performance of the optics under different operational conditions is studied by comparing the energy-photon count spectra of the direct and focused beams. Based on these analyses, the optics gain and efficiency as a function of photon energy are determined. A focal spot of 8.5 µm with a divergence angle of 0.59° is observed. The obtained characteristics are discussed and related to theoretical considerations. Moreover, the suitability and advantages of the present optics for X-ray microdiffraction is demonstrated using polycrystalline aluminium. Finally, possibilities for further developments are suggested.
doi_str_mv 10.1364/OE.499829
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title Characterization of Pt-coated twin paraboloidal laboratory capillary high energy X-ray optics
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