Re-emit setup for the future NIF ignition campaign.
sensitivities to inner-to-outer beam cone fraction (represented as inner-to-total cone fraction) from view factor calculations for ignition and reemit targets with and without diagnostics patches (zero x-ray albedo) and missing beams.
Re-emit flux transmitted through various filters and pinholes at re-emit temperature and corresponding centroid energies. All filters use pinholes except for Be which uses pinhole.
Signal-to-noise ratio per resolution element (black) and the resulting and accuracies (red) for the (dashed lines) and (solid lines) channels vs NIF using the re-emit setup for NIF (Fig. 1) and a Planckian model. Overlapped are experimental signal-to-noise ratio points from Omega re-emit data for both (circles) and (triangles) channels. Inferred accuracy from and variations in the time interval are also plotted for an average of .
Re-emit images recorded at ( exposure) for constant outer beams power (/beam) and variable inner cone power (0.19, 0.28, 0.4, and /beam) for both 900 and channels. Hohlraum axis is horizontal.
dependence with the inner-to-outer laser power balance measured at for (circles) and (squares) channels.
Experimental and time histories for (squares) and (circles) inner beam powers extracted from (solid lines) and (dashed lines) re-emit images (Fig. 5).
(a) Hohlraum temperature increase vs inner beam power calculated for 100% outer beam coupling (conversion into x rays) at the wall and 50%, 75%, and 100% inner beam couplings. The points correspond to the experimental values obtained by Dante; (b) radiation flux measured by Dante (solid lines) for different inner beam powers as function of time. The circles are the view factor calculations assuming a 100% outer beam and 50% inner beam hohlraum wall coupling.
Experimental and simulated re-emit images at using 50% inner beam and 100% outer beam coupling.
inferred from images (Fig. 5) recorded in the time interval (points) and calculated for 100% outer beam coupling and 50%, 75%, 100% inner beam couplings (lines) at 900 and photon energie
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