Phys. Rev. Lett. 100, 065003 (2008) [4 pages]Modifying Wire-Array Z-Pinch Ablation Structure Using Coiled ArraysReceived 13 September 2006; revised 9 October 2007; published 14 February 2008 A new wire-array configuration has been used to control the modulation of ablated plasma flow for the first time. Cylindrical aluminum coiled arrays, in which each straight wire is replaced with a single helix, were driven by a 1 MA, 240 ns current pulse. Ablated plasma is directed away from the coiled wire cores in a manner that can be understood in terms of Lorentz forces that arise from a complex current path modeled by 3D magnetohydrodynamic simulations. Outside the diameter of the helix, the flow of ablated plasma is axially modulated at the wavelength of the coil. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.065003
DOI:
10.1103/PhysRevLett.100.065003
PACS:
52.59.Qy, 52.38.Ph
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