Azimuthal Structure and Global Instability in the Implosion Phase of Wire Array-Pinch Experiments
- 9 November 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 81 (19), 4152-4155
- https://doi.org/10.1103/physrevlett.81.4152
Abstract
The implosion of aluminum wire array pinches driven by a 1.4 MA, 240 ns current pulse is studied. Plasma evolution is measured in the plane for the first time by an end-on laser interferometer. Merging of coronal plasmas with density of occurs in 90–65 ns for 16 mm diam arrays with 8–64 wires. Early uncorrelated instabilities (wavelength ) are observed in individual wires with later development of a global instability . The number of Rayleigh-Taylor instability foldings is 5.6–7 when the instability reaches an observable level and increases with the number of wires.
Keywords
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