Efficient concentration of high-energy x-rays for diffraction-limited imaging resolution
Posted on 2017-04-28 - 19:27
Newly available x-ray nanobeams in synchrotron radiation facilities open new research avenues in the nanosciences. However, a significant challenge is to efficiently concentrate, particularly for high-energy x-rays, a large photon flux into a very small focal spot. Here, we demonstrate for the first time, to the best of our knowledge, a sub-13-nm (FWHM) diffraction-limited x-ray focus size with 6 billion photons per second formed using elliptically figured mirrors operating at 33.6 keV. This is the smallest and brightest focus spot in this high-energy range. We report the results of an x-ray ptychography experiment to characterize the wavefront at the focus position. This offers new opportunities in multidisciplinary fields for x-ray microscopy techniques in which the focal spot size limits the resolution.
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Cesar da Silva, Julio; Pacureanu, Alexandra; Yang, Yang; Bohic, Sylvain; Morawe, Christian; Barrett, Raymond; et al. (2017). Efficient concentration of high-energy x-rays for diffraction-limited imaging resolution. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.3767357.v1
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AUTHORS (7)
JC
Julio Cesar da Silva
AP
Alexandra Pacureanu
YY
Yang Yang
SB
Sylvain Bohic
CM
Christian Morawe
RB
Raymond Barrett
PC
Peter Cloetens
KEYWORDS
Efficient concentrationx-ray ptychography experimentdiffraction-limited x-ray focus sizefocus positionfocus spotdiffraction-limited imaging resolutionFWHM33.6 keVspot size limitsx-ray nanobeamsx-ray microscopy techniquesx-rayssub -13-nmphoton fluxresearch avenuesmultidisciplinary fieldssynchrotron radiation facilities