Journal Article PUBDB-2017-01321

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Focusing hard x rays beyond the critical angle of total reflection by adiabatically focusing lenses

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2017
American Inst. of Physics Melville, NY

Applied physics letters 110(10), 101103 () [10.1063/1.4977882]
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Abstract: In response to the conjecture that the numerical aperture of x-ray optics is fundamentally limited by the critical angle of total reflection [Bergemann et al., Phys. Rev. Lett. 91, 204801 (2003)], the concept of adiabatically focusing refractive lenses was proposed to overcome this limit [Schroer and Lengeler, Phys. Rev. Lett. 94, 054802 (2005)]. We present an experimental realization of these optics made of silicon and demonstrate that they indeed focus 20 keV x rays to a 18.4 nm focus with a numerical aperture of 1.73(9) × 10$^{−3}$ that clearly exceeds the critical angle of total reflection of 1.55 mrad.

Classification:

Note: Verbundprojekte konnten oben nicht angegeben werden: 05K10OD1, 05K13OD4

Contributing Institute(s):
  1. FS-PETRA (FS-PETRA)
  2. Experimentebetreuung PETRA III (FS-PE)
  3. DOOR-User (DOOR)
Research Program(s):
  1. 6G3 - PETRA III (POF3-622) (POF3-622)
  2. 6214 - Nanoscience and Materials for Information Technology (POF3-621) (POF3-621)
  3. VH-VI-403 - In-Situ Nano-Imaging of Biological and Chemical Processes (2015_IFV-VH-VI-403) (2015_IFV-VH-VI-403)
Experiment(s):
  1. PETRA Beamline P06 (PETRA III)

Appears in the scientific report 2017
Database coverage:
Medline ; American Institute of Physics web posting guidelines ; OpenAccess ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; NationallizenzNationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
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 Record created 2017-03-07, last modified 2025-07-17


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