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Development of a Big Area BackLighter for high energy density experiments.
Flippo, K A; Kline, J L; Doss, F W; Loomis, E N; Emerich, M; Devolder, B; Murphy, T J; Fournier, K B; Kalantar, D H; Regan, S P; Barrios, M A; Merritt, E C; Perry, T S; Tregillis, I L; Welser-Sherrill, L; Fincke, J R.
Affiliation
  • Flippo KA; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Kline JL; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Doss FW; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Loomis EN; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Emerich M; General Atomics, P.O. Box 85608, San Diego, California 92121, USA.
  • Devolder B; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Murphy TJ; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Fournier KB; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
  • Kalantar DH; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
  • Regan SP; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
  • Barrios MA; Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA.
  • Merritt EC; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Perry TS; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Tregillis IL; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Welser-Sherrill L; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
  • Fincke JR; Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87507, USA.
Rev Sci Instrum ; 85(9): 093501, 2014 Sep.
Article in En | MEDLINE | ID: mdl-25273720
ABSTRACT
A very large area (7.5 mm(2)) laser-driven x-ray backlighter, termed the Big Area BackLighter (BABL) has been developed for the National Ignition Facility (NIF) to support high energy density experiments. The BABL provides an alternative to Pinhole-Apertured point-projection Backlighting (PABL) for a large field of view. This bypasses the challenges for PABL in the equatorial plane of the NIF target chamber where space is limited because of the unconverted laser light that threatens the diagnostic aperture, the backlighter foil, and the pinhole substrate. A transmission experiment using 132 kJ of NIF laser energy at a maximum intensity of 8.52 × 10(14) W/cm(2) illuminating the BABL demonstrated good conversion efficiency of >3.5% into K-shell emission producing ~4.6 kJ of high energy x rays, while yielding high contrast images with a highly uniform background that agree well with 2D simulated spectra and spatial profiles.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Rev Sci Instrum Year: 2014 Document type: Article Affiliation country:
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Rev Sci Instrum Year: 2014 Document type: Article Affiliation country: