DocumentCode :
2648942
Title :
Plasma dynamics in an inverse wire wirearray Z-pinch
Author :
Lebedev, S.V. ; Ampleford, D. ; Bland, S.N. ; Bott, S.C. ; Chittenden, J.P. ; Ciardi, A. ; Jennings, C. ; Hall, G.N. ; Suzuki, F.A. ; Palmer, J.B.A.
Author_Institution :
Imperial Coll., London
fYear :
2006
fDate :
4-8 June 2006
Firstpage :
272
Lastpage :
272
Abstract :
Summary form only given. We describe experiments on the MAGPIE facility (1 MA, 250 ns) with inverse wire array Z-pinches, in which the wires act as a return current cage placed around a central current conductor. In this configuration the plasma ablated from the wires is pushed by the JtimesB force in the radially outward direction and expands into the region free of the magnetic field. The parameters of the coronal plasma were measured using laser interferometry, X-ray and XUV imaging. The experimental set-up also allows addition of axial and radial magnetic fields, and we study the effects of these fields on the plasma dynamics and the ablation rate. The complete ablation of the wires triggers radial "explosion" of the plasma which proceeds through formation of gaps in the wire cores, similar to the dynamics of standard wire arrays. The opening of the current path in the final stages could potentially be used as a plasma opening switch
Keywords :
Z pinch; corona; explosions; plasma diagnostics; plasma transport processes; 1 MA; 250 ns; JtimesB force; MAGPIE facility; X-ray imaging; XUV imaging; axial magnetic fields; central current conductor; coronal plasma; explosion; inverse wire wire-array Z-pinch; laser interferometry; plasma dynamics; plasma opening switch; radial magnetic fields; return current cage; wire ablation; Conductors; Interferometry; Laser ablation; Magnetic field measurement; Optical imaging; Plasma measurements; Plasma x-ray sources; Wire; X-ray imaging; X-ray lasers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Science, 2006. ICOPS 2006. IEEE Conference Record - Abstracts. The 33rd IEEE International Conference on
Conference_Location :
Traverse City, MI
Print_ISBN :
1-4244-0125-9
Type :
conf
DOI :
10.1109/PLASMA.2006.1707144
Filename :
1707144
Link To Document :
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