Efficiency of a multilayer-Laue-lens with a 102 μm aperture
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source; Fraunhofer IWS Dresden (Germany)
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source; Brookhaven National Lab. (BNL), Upton, NY (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
A multilayer-Laue-lens (MLL) comprised of WSi2/Al layers stacked to a full thickness of 102 microns was characterized for its diffraction efficiency and dynamical diffraction properties by x-ray measurements made in the far field. The achieved aperture roughly doubles the previous maximum reported aperture for an MLL, thereby doubling the working distance. Negative and positive first orders were found to have 14.2 % and 13.0 % efficiencies, respectively. A section thickness of 9.6 μm was determined from Laue-case thickness fringes in the diffraction data. A background gas consisting of 90 % Ar and 10 % N2 was used for sputtering. This material system was chosen to reduce grown-in stress as the multilayer is deposited. Although some regions of the full MLL exhibited defects, the presently reported results were obtained for a region devoid of defects. The data compare well to dynamical diffraction calculations with Coupled Wave Theory (CWT) which provided confirmation of the optical constants and densities assumed for the CWT calculations.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- OSTI ID:
- 1239773
- Alternate ID(s):
- OSTI ID: 1229639
OSTI ID: 22489150
OSTI ID: 1392419
- Report Number(s):
- BNL--108332-2015-JA
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 8 Vol. 107; ISSN APPLAB; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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