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Hybrid simulation of z-pinches in support of wire array implosion experiments at the Nevada Terawatt Facility

Published online by Cambridge University Press:  20 December 2006

V. SOTNIKOV ,
V. V. IVANOV ,
T. E. COWAN ,
J. N. LEBOEUF ,
B. V. OLIVER ,
C. COVERDALE ,
B. JONES ,
C. DEENEY ,
T. A. MEHLHORN  and
P. D. LePELL
...Show all authors
V. SOTNIKOV
Affiliation:
Department of Physics, UNR, Reno, NV 89557, USA
V. V. IVANOV
Affiliation:
Department of Physics, UNR, Reno, NV 89557, USA
T. E. COWAN
Affiliation:
Department of Physics, UNR, Reno, NV 89557, USA
J. N. LEBOEUF
Affiliation:
Department of Physics, UCLA, Los Angeles, CA 90095, USA
B. V. OLIVER
Affiliation:
ATK-MRC, Albuquerque, NM 87110
C. COVERDALE
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87123, USA
B. JONES
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87123, USA
C. DEENEY
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87123, USA
T. A. MEHLHORN
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87123, USA
P. D. LePELL
Affiliation:
Ktech Corp., Albuquerque, NM 87123, USA
P. HELLINGER
Affiliation:
IAP, Prague 4, Czech Republic
P. TRÁVNÍČEK
Affiliation:
IAP, Prague 4, Czech Republic
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Abstract

Three-dimensional hybrid simulation of a plasma current-carrying column reveal two different regimes of sausage and kink instability development. In the first regime, with small Hall parameter, development of instabilities leads to the appearance of large-scale axial perturbations and eventually to bending of the plasma column. In the second regime, with a four-times-larger Hall parameter, small-scale perturbations dominate and no bending of the plasma column is observed. Simulation results are compared with laser probing experimental data obtained during wire array implosions on the Zebra pulse power generator at the Nevada Terawatt Facility.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 6 , December 2006 , pp. 1113 - 1116
Copyright
2006 Cambridge University Press

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