Nanofocusing with aberration-corrected rotationally parabolic refractive X-ray lenses
Wavefront errors of rotationally parabolic refractive X-ray lenses made of beryllium (Be CRLs) have been recovered for various lens sets and X-ray beam configurations. Due to manufacturing via an embossing process, aberrations of individual lenses within the investigated ensemble are very similar. By deriving a mean single-lens deformation for the ensemble, aberrations of any arbitrary lens stack can be predicted from the ensemble with \bar{\sigma} = 0.034 λ . Using these findings the expected focusing performance of current Be CRLs are modeled for relevant X-ray energies and bandwidths and it is shown that a correction of aberrations can be realised without prior lens characterization but simply based on the derived lens deformation. The performance of aberration-corrected Be CRLs is discussed and the applicability of aberration-correction demonstrated over wide X-ray energy ranges.
Source: Journal of Synchrotron Radiation - Category: Physics Authors: Seiboth, F. Wittwer, F. Scholz, M. Kahnt, M. Seyrich, M. Schropp, A. Wagner, U. Rau, C. Garrevoet, J. Falkenberg, G. Schroer, C.G. Tags: refractive X-ray optics aberration correction ptychography phase plate research papers Source Type: research
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