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DOI: 10.5445/IR/1000082062
Veröffentlicht am 17.04.2018

Scalable, large area compound array refractive lens for hard X-rays

Reich, Stefan; dos Santos Rolo, Tomy; Letzel, Alexander; Baumbach, Tilo; Plech, Anton

Abstract (englisch):
We demonstrate the fabrication of a 2D Compound Array Refractive Lens (CARL) for multicontrast X-ray imaging. The CARL consists of six stacked polyimide foils with each displaying a
2D array of lenses with a 65 lm pitch aiming for a sensitivity on sub-micrometer structures with a
(few-)micrometer resolution in sensing through phase and scattering contrast at multiple keV. The
parabolic lenses are formed by indents in the foils by a paraboloid needle. The ability for fast
single-exposure multi-contrast imaging is demonstrated by filming the kinetics of pulsed laser
ablation in liquid. The three contrast channels, absorption, differential phase, and scattering, are
imaged with a time resolution of 25 ls. By changing the sample-detector distance, it is possible to
distinguish between nanoparticles and microbubbles.

Zugehörige Institution(en) am KIT Institut für Photonenforschung und Synchrotronstrahlung (IPS)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 0003-6951, 1077-3118
URN: urn:nbn:de:swb:90-820621
KITopen ID: 1000082062
HGF-Programm 56.03.20; LK 01
Erschienen in Applied physics letters
Band 112
Heft 15
Seiten 151903
Vorab online veröffentlicht am 09.04.2018
Schlagworte laser ablation in liquids, multi contrast retrieval, scattering contrast imaging, X-ray lens
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