Evolution of MHD Instabilities in Plasma Imploding Under Magnetic Field

Two-dimensional 3-ns-gated visible images, recorded at different times during the implosion of plasma under azimuthal magnetic field ( Z -pinch), revealed ringlike instabilities followed by the development of axially and azimuthally nonuniform structures in the imploding plasma. Remarkably, the evol...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2011-11, Vol.39 (11), p.2392-2393
Main Authors: Osin, D., Kroupp, E., Starobinets, A., Rosenzweig, G., Alumot, D., Maron, Y., Fisher, A., Yu, E., Giuliani, J. L., Deeney, C.
Format: Article
Language:English
Subjects:
Arrays
Charge coupled devices
Correlation analysis
Evolution
Fluid mechanics
Implosions
Instability
Magnetic fields
Magnetic resonance imaging
Magnetohydrodynamics
Plasma implosion
Plasma measurements
Plasma physics
Plasmas
Stability
Three dimensional models
Velocity
visible imaging
Z -pinch
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Summary:Two-dimensional 3-ns-gated visible images, recorded at different times during the implosion of plasma under azimuthal magnetic field ( Z -pinch), revealed ringlike instabilities followed by the development of axially and azimuthally nonuniform structures in the imploding plasma. Remarkably, the evolution in time of all structures was found to be highly repeatable in different shots, which should allow, through 3-D magnetohydrodynamics modeling, for systematically studying the development in time of these complex phenomena and correlating them with the initial plasma parameters. The data are also used to infer the time-dependent outer plasma radius and plasma radial velocities.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2011.2159019