A Dual Channel X-ray Spectrometer for Fast Ignition Research

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A new Dual Channel Highly Ordered Pyrolytic Graphite (DC-HOPG) x-ray spectrometer was developed to study laser-generated electron beam transport. The instrument uses a pair of graphite crystals and has the advantage of simultaneously detecting self emission from low-Z materials in first diffraction order and high-Z materials in second order. The emissions from the target are detected using a pair of parallel imaging plates positioned in a such way that the noise from background is minimized and the mosaic focusing is achieved. Initial tests of the diagnostic on Titan laser (I {approx} 10{sup 20} W/cm{sup 2}, {tau} = 0.7 ps) show ... continued below

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PDF-file: 15 pages; size: 1.1 Mbytes

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Akli, K U; Patel, P K; Van Maren, R; Stephens, R B; Key, M H; Higginson, D P et al. April 19, 2010.

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A new Dual Channel Highly Ordered Pyrolytic Graphite (DC-HOPG) x-ray spectrometer was developed to study laser-generated electron beam transport. The instrument uses a pair of graphite crystals and has the advantage of simultaneously detecting self emission from low-Z materials in first diffraction order and high-Z materials in second order. The emissions from the target are detected using a pair of parallel imaging plates positioned in a such way that the noise from background is minimized and the mosaic focusing is achieved. Initial tests of the diagnostic on Titan laser (I {approx} 10{sup 20} W/cm{sup 2}, {tau} = 0.7 ps) show excellent signal-to-noise ratio (SNR) > 1000 for the low energy channel and SNR > 400 for the high energy channel.

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PDF-file: 15 pages; size: 1.1 Mbytes

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  • Journal Name: Journal of Instrumentation, vol. 5, no. 7, July 30, 2010, P07008; Journal Volume: 5; Journal Issue: 7

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  • Report No.: LLNL-JRNL-428255
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 992284
  • Archival Resource Key: ark:/67531/metadc1012579

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Office of Scientific & Technical Information Technical Reports

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Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • April 19, 2010

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 27, 2017, 5:34 p.m.

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Akli, K U; Patel, P K; Van Maren, R; Stephens, R B; Key, M H; Higginson, D P et al. A Dual Channel X-ray Spectrometer for Fast Ignition Research, article, April 19, 2010; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc1012579/: accessed December 10, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.