Experiments performed at the Laboratory for Laser Energetics with a continuous-wave (cw) x-ray source and on the OMEGA and OMEGA EP Laser Systems [Boehly et al., Opt. Commun. 133, 495 (1997) and Waxer et al., Opt. Photonics News 16, 30 (2005)] have utilized a Fresnel zone plate (FZP) to obtain x-ray images with a spatial resolution as small as ∼1.5 μm. Such FZP images were obtained with a charge-coupled device or a framing camera at energies ranging from 4.5 keV to 6.7 keV using x-ray line emission from both the cw source and high-intensity, laser-beam–illuminated metal foils. In all cases, the resolution test results are determined from patterns and grids backlit by these sources. The resolutions obtained are shown to be due to a combination of the spectral content of the x-ray sources and detector resolution limited by the magnification of the images (14× to 22×). High-speed framing cameras were used to obtain FZP images with frame times as short as ∼30 ps. Double-shell implosions on OMEGA were backlit by laser-irradiated Fe foils, thus obtaining a framing-camera–limited, FZP-image resolution of ∼3 μm–4 μm.
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March 2021
Research Article|
March 02 2021
High-resolution x-ray radiography with Fresnel zone plates on the University of Rochester’s OMEGA Laser Systems
F. J. Marshall
;
F. J. Marshall
a)
1
University of Rochester, Laboratory for Laser Energetics
, 250 East River Rd., Rochester, New York 14623, USA
a)Author to whom correspondence should be addressed: [email protected]
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S. T. Ivancic
;
S. T. Ivancic
1
University of Rochester, Laboratory for Laser Energetics
, 250 East River Rd., Rochester, New York 14623, USA
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C. Mileham;
C. Mileham
1
University of Rochester, Laboratory for Laser Energetics
, 250 East River Rd., Rochester, New York 14623, USA
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P. M. Nilson;
P. M. Nilson
1
University of Rochester, Laboratory for Laser Energetics
, 250 East River Rd., Rochester, New York 14623, USA
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J. J. Ruby
;
J. J. Ruby
1
University of Rochester, Laboratory for Laser Energetics
, 250 East River Rd., Rochester, New York 14623, USA
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C. Stoeckl
;
C. Stoeckl
1
University of Rochester, Laboratory for Laser Energetics
, 250 East River Rd., Rochester, New York 14623, USA
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B. S. Scheiner
;
B. S. Scheiner
2
Plasma Theory and Applications, Los Alamos National Laboratory
, MS F699, Los Alamos, New Mexico 87545, USA
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M. J. Schmitt
M. J. Schmitt
2
Plasma Theory and Applications, Los Alamos National Laboratory
, MS F699, Los Alamos, New Mexico 87545, USA
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a)Author to whom correspondence should be addressed: [email protected]
Rev. Sci. Instrum. 92, 033701 (2021)
Article history
Received:
October 23 2020
Accepted:
February 08 2021
Citation
F. J. Marshall, S. T. Ivancic, C. Mileham, P. M. Nilson, J. J. Ruby, C. Stoeckl, B. S. Scheiner, M. J. Schmitt; High-resolution x-ray radiography with Fresnel zone plates on the University of Rochester’s OMEGA Laser Systems. Rev. Sci. Instrum. 1 March 2021; 92 (3): 033701. https://doi.org/10.1063/5.0034903
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