Seeded perturbations in wire array z-pinches.

Conference · Mon Nov 01 04:00:00 EST 2004

OSTI ID:964168

Robinson, Allen Conrad; Kantsyrev, Victor Leonidovich ^[1]; Wunsch, Scott Edward; Oliver, Bryan Velten ^[2]; Lebedev, Sergey V ^[3]; Safronova, Alla S ^[1]; Maxwell, J ^[4]; McKenney, John Lee; Ampleford, David J ^[3]; Rapley, J ^[3]; Bott, S C ^[3]; Palmer, J B. A. ^[3]; Bland, Simon Nicholas ^[3]; Jones, Brent Manley; Chittenden, Jeremy Paul ^[3]; Garasi, Christopher Joseph; Hall, Gareth Neville ^[3]; Mehlhorn, Thomas Alan; Deeney, Christopher

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1. University of Nevada, Reno, NV
2. Mission Research Corporation, Albuquerque, NM
3. Imperial College, London, UK
4. Los Alamos National Laboratory, Los Alamos, NM

The impact of 3D structure on wire array z-pinch dynamics is a topic of current interest, and has been studied by the controlled seeding of wire perturbations. First, Al wires were etched at Sandia, creating 20% radial perturbations with variable axial wavelength. Observations of magnetic bubble formation in the etched regions during experiments on the MAGPIE accelerator are discussed and compared to 3D MHD modeling. Second, thin NaF coatings of 1 mm axial extent were deposited on Al wires and fielded on the Zebra accelerator. Little or no axial transport of the NaF spectroscopic dopant was observed in spatially resolved K-shell spectra, which places constraints on particle diffusivity in dense z-pinch plasmas. Finally, technology development for seeding perturbations is discussed.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 964168
• Report Number(s): SAND2004-5744C
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BUBBLES
COATINGS
K SHELL
PHYSICS
PLASMA
SIMULATION
SPECTRA
TRANSPORT