Megabar liner experiments on Pegasus II

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Using pulsed power to implode a liner onto a target can produce high shock pressures for many interesting application experiments. With a Pegasus II facility in Los Alamos, a detailed theoretical analysis has indicated that the highest attainable pressure is around 2 Mbar for a best designed aluminum liner. Recently, an interesting composite liner design has been proposed which can boost the shock pressure performance by a factor 4 over the aluminum liner. This liner design was adopted in the first megabar (Megabar-1) liner experiment carried out on Pegasus last year to verify the design concept and to compare the ... continued below

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7 p.

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Lee, H.; Bartsch, R.R. & Bowers, R.L. September 1, 1997.

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Description

Using pulsed power to implode a liner onto a target can produce high shock pressures for many interesting application experiments. With a Pegasus II facility in Los Alamos, a detailed theoretical analysis has indicated that the highest attainable pressure is around 2 Mbar for a best designed aluminum liner. Recently, an interesting composite liner design has been proposed which can boost the shock pressure performance by a factor 4 over the aluminum liner. This liner design was adopted in the first megabar (Megabar-1) liner experiment carried out on Pegasus last year to verify the design concept and to compare the effect of Rayleigh-Taylor instabilities on liner integrity with the code simulations. We present briefly the physical considerations to explain why the composite liner provides the best shock pressure performance. The theoretical modeling and performance of Megabar-1 liner are discussed. Also presented are the first experimental results and the liner design modification for our next experiment.

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7 p.

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OSTI as DE97008971

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  • 11. IEEE international pulsed power conference, Baltimore, MD (United States), 29 Jun - 2 Jul 1997

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  • Other: DE97008971
  • Report No.: LA-UR--97-2412
  • Report No.: CONF-9706113--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 539865
  • Archival Resource Key: ark:/67531/metadc690026

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 29, 2016, 4:12 p.m.

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Lee, H.; Bartsch, R.R. & Bowers, R.L. Megabar liner experiments on Pegasus II, article, September 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc690026/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.