DocumentCode :
227257
Title :
The influence of insulating coatings upon single wire explosions
Author :
Presura, R. ; O´Brien, L. ; Haque, Showera
Author_Institution :
Nevada Terawatt Facility, Univ. of Nevada, Reno, NV, USA
fYear :
2014
fDate :
25-29 May 2014
Firstpage :
1
Lastpage :
1
Abstract :
Summary form only given. Experiments have been initiated on the 1-MA Z-pinch generator at the Nevada Terawatt Facility to investigate the influence of insulating coatings on the ablation and energy deposition in current-carrying metallic wires. The Z-pinch loads used included single 50 μm Cu wires with and without polymer coatings, as well as pairs of such wires in a two-wire array configuration. The dynamics of these Z-pinches was diagnosed with laser shadowgraphy and X-pinch driven X-ray backlighting. It was observed that the ablation and the instability growth of the coated wires was delayed compared with that of the uncoated ones. Besides possible direct applications to enhanced energy deposition in Z-pinches, the coated exploding wires represent a platform for studying mixing in conditions that may be relevant to astrophysical systems and to directly or indirectly laser-driven fusion capsules.
Keywords :
Z pinch; copper; exploding wires; explosions; insulating coatings; plasma diagnostics; plasma instability; polymer films; Cu; X-pinch driven X-ray backlighting; Z-pinch generator; Z-pinch loads; ablation; astrophysical systems; coated exploding wires; current 1 MA; current-carrying metallic wires; enhanced energy deposition; indirectly laser-driven fusion capsule; instability growth; insulating coatings; laser shadowgraphy; mixing; polymer coatings; single Cu wires; single wire explosions; size 50 mum; two-wire array configuration; wire pairs; Coatings; Educational institutions; Explosions; Generators; Polymer films; Wires; X-ray lasers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS), 2014 IEEE 41st International Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4799-2711-1
Type :
conf
DOI :
10.1109/PLASMA.2014.7012272
Filename :
7012272
Link To Document :
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