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- W1551179196 abstract "X-ray imaging will be an important diagnostic tool for inertial confinement fusion (ICF) research at the National Ignition Facility (NIF). However, high neutron yields will make x-ray imaging much more difficult than it is at smaller facilities. We analyze the feasibility and performance of a High-Energy X-Ray Imager (HEXRI) to be used on cryogenic DT implosions at NIF, with particular emphasis on spatial-resolution, field of view, signal-to-background and signal-to-noise ratios. Using a pinhole about 4 {micro}m in diameter a resolution of 5.8 {micro}m is achieved at 9 keV, limited by restrictions in the pinhole positioning. The resolution varies between 8.5 and 4.5 {micro}m in the 5-20 keV spectral range. Different options for the scintillating materials have been evaluated with the goal of having a sufficiently fast phosphor screen to allow time gating for minimizing neutron-induced background. Signal/Background (SBR) and Signal/Noise (SNR) ratios (limited to x-rays) have been calculated for different commercially-available scintillators, both showing adequate values with either a tantalum or a platinum pinhole substrate." @default.
- W1551179196 created "2016-06-24" @default.
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- W1551179196 creator A5059817537 @default.
- W1551179196 date "2005-04-18" @default.
- W1551179196 modified "2023-10-16" @default.
- W1551179196 title "High-Energy X-Ray Imager for Laser-Fusion Research at the National Ignition Facility" @default.
- W1551179196 doi "https://doi.org/10.2172/15016017" @default.
- W1551179196 hasPublicationYear "2005" @default.
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