Hybrid Simulation of the Z-pinch Instabilities for Profiles Generated in the Process of Wire Array Implosion on the Saturn

Details Hybrid Simulation of the Z-pinch Instabilities for Profiles Generated in the Process of Wire Array Implosion on the Saturn Hybrid Simulation of the Z-pinch Instabilities for Profiles Generated in the Process of Wire Array Implosion on the Saturn

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dpplp1139s&link_type=abstract

American Physical Society, 45th Annual Meeting of the Division of Plasma Physics, October 27-31, 2003, Albuquerque, New Mexico,

Physics

Plasma Physics

Scientific paper

Hybrid simulations have been carried out to study Z-pinch instabilities for non-equilibrium density profiles generated in the latest stages of wire array implosions. These instabilities could impact the energy deposition into the stagnated plasma from wire array implosions. Two series of Al:Mg wire array Z-pinch implosions performed on the Saturn pulsed-power generator were analyzed. The hybrid simulations serve the dual purpose of determining the most unstable modes and of investigating the nonlinear stage of instability development. The aim is to determine what type of plasma motion and wave turbulence can be obtained in the stagnation phase of array implosion. Simulations also allow to determine what part of the total energy of the imploding wire array can be transferred to the energy of the excited wave modes. The 3D hybrid simulations show that robust sausage and kink instabilities occur which result in disruption of the plasma column. Supported by University of Nevada-Reno under DOE/NNSA Grant DE-FC08-01NV14050 and University of California at Los Angeles under DOE Grant DE-FG03-01ER54617. J.P. Apruzese, et al.,Phys. Plasmas 8, 3799, 2001.

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