Analysis of 2011 Defect Imaging Capsule Implosions
ORAL
Abstract
Los Alamos is engaged in a project to design high neutron fluence feature-driven mix experiments for the National Ignition Facility in 2012. These results will be relevant for determining how much imperfection capsules can have in inertial fusion energy. To prepare for NIF, we fielded shots on the Omega laser in January and July 2011 with a 40 beam polar direct drive configuration similar to what we will employ on NIF. The capsules were 15 to 17 micron CH plastic shells about 880 microns in diameter filled with 5 atm of D$_{2}$ gas. We fielded capsules with different dopant layers and different depth equatorial grooves that were about 30 microns wide. We obtained radius versus time plots, radiographs, neutron yields, ion temperatures, burn widths, streak spectra, among other data. Preliminary calculations show that we match the radius versus time plots within about the data error and we have reasonable matches to the other data. We will will present these results and additional detailed comparisons of calculations to data. Work performed by Los Alamos National Laboratory under contract DE-AC52-06NA25396 for the National Nuclear Security Administration of the U.S. Department of Energy.
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Authors
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P.A. Bradley
Los Alamos National Lab, Los Alamos National Laboratory, LANL
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J. Cobble
Los Alamos National Lab, Los Alamos National Laboratory, LANL
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S.C. Hsu
Los Alamos National Lab, LANL, Los Alamos National Laboratory
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G.R. Magelssen
Los Alamos National Lab, Los Alamos National Laboratory, LANL
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T.J. Murphy
Los Alamos National Lab, Los Alamos National Laboratory, LANL
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K.D. Obrey
Los Alamos National Laboratory, Los Alamos National Lab, LANL
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M. Schmitt
Los Alamos National Lab, Los Alamos National Laboratory, LANL
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I.L. Tregillis
Los Alamos National Lab, Los Alamos National Laboratory, LANL
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N.S. Vinyard
Los Alamos National Lab, Los Alamos National Laboratory, LANL
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F.J. Wysocki
Los Alamos National Laboratory, Los Alamos National Lab, LANL