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000637160 041__ $$aEnglish
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000637160 1001_ $$0P:(DE-H253)PIP1020829$$aWittwer, Felix$$b0$$eCorresponding author$$udesy
000637160 1112_ $$a15th International Conference on Synchrotron Radiation Instrumentation$$cHamburg$$d2024-08-26 - 2024-08-30$$gSRI 2024$$wGermany
000637160 245__ $$aAnnular x-ray optics offer improved resolution for radiation sensitive samples
000637160 260__ $$aBristol$$bIOP Publ.$$c2025
000637160 300__ $$a6 
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000637160 520__ $$aTo detect faint signals from weakly scattering samples, high-resolution x-ray microscopy typically requires a high photon flux. This exposes samples to high radiation doses and can cause radiation damage. In this work we propose the use of annular optics in scanning microscopy as an alternative to full-aperture optics. Annular optics act as high-pass filters that produce a stronger signal from edges. Compared to regular optics with the same numerical aperture, annular optics expose the sample to less dose while producing the same signal from small sample features. Annular optics benefit significantly from the high photon fluxes of the latest x-ray sources to compensate for their overall smaller cross section. Using numerical simulations, we show that annular optics offer superior optical performance for sample features close to the resolution limit of the optic.
000637160 536__ $$0G:(DE-HGF)POF4-632$$a632 - Materials – Quantum, Complex and Functional Materials (POF4-632)$$cPOF4-632$$fPOF IV$$x0
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000637160 7001_ $$0P:(DE-H253)PIP1088525$$aModregger, Peter$$b1
000637160 773__ $$0PERI:(DE-600)2166409-2$$a10.1088/1742-6596/3010/1/012073$$gVol. 3010, no. 1, p. 012073 -$$n1$$p012073 $$tJournal of physics / Conference Series$$v3010$$x1742-6588$$y2025
000637160 7870_ $$0PUBDB-2024-01368$$aLaasch, Wiebke et.al.$$dBristol, UK : IOP Publishing Ltd, 2025$$iHasPart$$r$$tSynchrotron radiation instrumentation
000637160 8564_ $$uhttps://bib-pubdb1.desy.de/record/637160/files/Wittwer_2025_J._Phys.__Conf._Ser._3010_012073.pdf$$yOpenAccess
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000637160 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1020829$$aUniversity of Siegen$$b0
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000637160 9141_ $$y2025
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