Liner Stability Experiments at Pegasus: Diagnostics and Experimental Results

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A series of experiments to compare imploding liner performance with magneto-hydrodynamic (MHD) modeling has been performed at the Los Alamos National Laboratory Pegasus II pulse power machine. Liner instability growth originating from initial perturbations machined into the liner has been observed with high resolution. Three major diagnostics were used: radiography, Velocity Interferometer for a Surface of Any Reflector (VISAR), and fiber optic impact pins. For radiography, three flash x-ray units were mounted radially to observe liner shape at three different times during the implosion. Liner velocity was measured continuously with the VISAR for the entire distance traveled in two experiments. ... continued below

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Clark, D.A.; Morgan, D.V. & Rodriguez, G. October 18, 1998.

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A series of experiments to compare imploding liner performance with magneto-hydrodynamic (MHD) modeling has been performed at the Los Alamos National Laboratory Pegasus II pulse power machine. Liner instability growth originating from initial perturbations machined into the liner has been observed with high resolution. Three major diagnostics were used: radiography, Velocity Interferometer for a Surface of Any Reflector (VISAR), and fiber optic impact pins. For radiography, three flash x-ray units were mounted radially to observe liner shape at three different times during the implosion. Liner velocity was measured continuously with the VISAR for the entire distance traveled in two experiments. Optical impact pins provide a high-resolution measure of liner symmetry and shape near the end of travel. Liner performance has compared well with predictions.

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Medium: P; Size: vp.

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INIS; OSTI as DE00759334

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  • VIIIth International Conference on Megagauss Magnetic Field Generation and Related Topics, Tallahassee, FL (US), 10/18/1998--10/23/1998

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  • Report No.: LA-UR-98-4497
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 759334
  • Archival Resource Key: ark:/67531/metadc703037

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  • October 18, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • May 6, 2016, 1:35 p.m.

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Clark, D.A.; Morgan, D.V. & Rodriguez, G. Liner Stability Experiments at Pegasus: Diagnostics and Experimental Results, article, October 18, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc703037/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.