Ejecta experiments at the Pegasus Pulsed Power facility

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Description

When a shock wave interacts at the surface of a metal target, target material can be emitted from the surface called ejecta. The mass, size, shape, and velocity of ejecta varies depending on the initial shock conditions, and target material properties. In order to understand this phenomena, diagnostics have been developed and implemented at the Pegasus Pulsed Power facility located at Los Alamos National Laboratory. The facility provides both radial and axial access for making measurements. There exist optical, laser, and x-ray paths for performing measurements on the target assembly located near the center of the machine. The facility can ... continued below

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8 p.

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Sorenson, D.S.; Carpenter, B. & King, N.S.P. August 1, 1997.

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Description

When a shock wave interacts at the surface of a metal target, target material can be emitted from the surface called ejecta. The mass, size, shape, and velocity of ejecta varies depending on the initial shock conditions, and target material properties. In order to understand this phenomena, diagnostics have been developed and implemented at the Pegasus Pulsed Power facility located at Los Alamos National Laboratory. The facility provides both radial and axial access for making measurements. There exist optical, laser, and x-ray paths for performing measurements on the target assembly located near the center of the machine. The facility can provide many mega amps of current which is transported to a 5.0 cm diameter, 2.0 cm high aluminum cylinder. The current and associated magnetic field set up forces which implode the aluminum cylinder radially inward. As the aluminum cylinder reaches the appropriate velocity it impacts a target cylinder. Due to this impact, a shock wave is set up in the target and eventually interacts at the inner surface of the target cylinder where ejecta are produced. A 1.5 cm diameter collimator cylinder located inside the target cylinder is used to control the number of ejecta particles that arrive at the center region where ejecta measurements are made. Diagnostics have been developed including in-line Fraunhofer holography and visible shadowgraph. Details of these diagnostics are described.

Physical Description

8 p.

Notes

OSTI as DE97008962

Source

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

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  • Other: DE97008962
  • Report No.: LA-UR--97-2459
  • Report No.: CONF-9706113--
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/642732 | External Link
  • Office of Scientific & Technical Information Report Number: 642732
  • Archival Resource Key: ark:/67531/metadc689746

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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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Creation Date

  • August 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 25, 2016, 4:14 p.m.

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Sorenson, D.S.; Carpenter, B. & King, N.S.P. Ejecta experiments at the Pegasus Pulsed Power facility, report, August 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc689746/: accessed July 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.