TITLE

Caterpillar structures in single-wire Z-pinch experiments

AUTHOR(S)
Johnston, M.D.; Lau, Y.Y.; Gilgenbach, R.M.; Strickler, T.S.; Jones, M.C.; Cuneo, M.E.; Mehlhorn, T.A.
PUB. DATE
December 2003
SOURCE
Applied Physics Letters;12/15/2003, Vol. 83 Issue 24, p4915
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A series of experiments have been performed on single-wire Z pinches (1–2 kA, 20 kV, pulse length 500 ns; Al, Ag, W, or Cu wire of diameter 7.5–50 μm, length 2.5 cm). Excimer laser absorption photographs show expansion of metallic plasmas on a time scale of order 100 ns. The edge of this plasma plume begins to develop structures resembling a caterpillar only after the current pulse reaches its peak value. The growth of these caterpillar structures is shown to be consistent with the Rayleigh–Taylor instability of the decelerating plasma plume front at the later stage of the current pulse. © 2003 American Institute of Physics.
ACCESSION #
11649686

 

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