Fourier-space image processing for spherical experiments on OMEGA (invited)

Studies of compressed shell integrity of spherical targets on the 60-beam 30 kJ UV OMEGA laser system involve spatially and temporally resolved measurements of core emission at different x-ray energies. Hot-core emission backlights a titanium-doped shell that is imaged at x-ray energies above and be...

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Bibliographic Details
Published in:Review of Scientific Instruments 2001-01, Vol.72 (1), p.635-642
Main Authors: Smalyuk, V. A., Boehly, T. R., Iwan, L. S., Kessler, T. J., Knauer, J. P., Marshall, F. J., Meyerhofer, D. D., Stoeckl, C., Yaakobi, B., Bradley, D. K.
Format: Article
Language:English
Subjects:
CAMERAS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
IMAGE PROCESSING
LASERS
PHYSICS
RESOLUTION
TARGETS
TITANIUM
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Summary:Studies of compressed shell integrity of spherical targets on the 60-beam 30 kJ UV OMEGA laser system involve spatially and temporally resolved measurements of core emission at different x-ray energies. Hot-core emission backlights a titanium-doped shell that is imaged at x-ray energies above and below the titanium K edge. The difference between the two images is related to perturbations in the cold, or absorbing, part of the shell. The core emission has been imaged by a pinhole array on a framing camera and recorded on film. The resolution and noise of all parts of the imaging system have been characterized. Using this information, a Wiener filter that reduces noise, compensates for detector resolution, and facilitates measurement of shell nonuniformities has been formulated.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1315642