X-ray backlit imaging measurement of in-flight pusher density for an indirect drive capsule implosion

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Both the efficiency of an implosion and the growth rate of hydrodynamic instability increase with the aspect ratio of an implosion. In order to study the physics of implosions with high Rayleigh-Taylor growth factors, we use doped ablators which should minimize x-ray preheat and shell decompression, and hence increase in-flight aspect ratio. We use x-ray backlighting techniques to image the indirectly-driven capsules. We record backlit 4.7 keV images of the full capsule throughout the implosion phase with 55 ps and 15 {mu}m resolution. We use these images to measure the in-flight aspect ratios for doped ablators, and we inferred the ... continued below

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18 p.

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Kalantar, D.H.; Haan, S.W. & Hammel, B.A. May 6, 1996.

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Description

Both the efficiency of an implosion and the growth rate of hydrodynamic instability increase with the aspect ratio of an implosion. In order to study the physics of implosions with high Rayleigh-Taylor growth factors, we use doped ablators which should minimize x-ray preheat and shell decompression, and hence increase in-flight aspect ratio. We use x-ray backlighting techniques to image the indirectly-driven capsules. We record backlit 4.7 keV images of the full capsule throughout the implosion phase with 55 ps and 15 {mu}m resolution. We use these images to measure the in-flight aspect ratios for doped ablators, and we inferred the radial density profile as a function of time by Abel inverting the x-ray transmission profiles.

Physical Description

18 p.

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INIS; OSTI as DE96010407

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  • 11. annual high-temperature plasma diagnostics conference, Monterey, CA (United States), 12-16 May 1996

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  • Other: DE96010407
  • Report No.: UCRL-JC--123285
  • Report No.: CONF-960543--10
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 244466
  • Archival Resource Key: ark:/67531/metadc664726

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • May 6, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 23, 2016, 12:58 p.m.

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Kalantar, D.H.; Haan, S.W. & Hammel, B.A. X-ray backlit imaging measurement of in-flight pusher density for an indirect drive capsule implosion, article, May 6, 1996; California. (digital.library.unt.edu/ark:/67531/metadc664726/: accessed November 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.