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A high voltage pulsed power supply for capillary discharge waveguide applications

Abu-Azoum, Salima Saleh and Wiggins, Mark and Issac, Riju and Welsh, Gregor H. and Vieux, Gregory and Ganciu, Mihai and Jaroszynski, Dino (2011) A high voltage pulsed power supply for capillary discharge waveguide applications. Review of Scientific Instruments, 82 (6). ISSN 0034-6748

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Abstract

We present an all solid-state, high voltage pulsed power supply for inducing stable plasma formation (density ∼1018 cm−3) in gas-filled capillary discharge waveguides. The pulser (pulse duration of 1 μs) is based on transistor switching and wound transmission line transformer technology. For a capillary of length 40 mm and diameter 265 μm and gas backing pressure of 100 mbar, a fast voltage pulse risetime of 95 ns initiates breakdown at 13 kV along the capillary. A peak current of ∼280 A indicates near complete ionization, and the r.m.s. temporal jitter in the current pulse is only 4 ns. Temporally stable plasma formation is crucial for deploying capillary waveguides as plasma channels in laser-plasma interaction experiments, such as the laser wakefield accelerator.

Item type: Article
ID code: 40768
Keywords: lines, wakefield accelerators, lasers, beams, plasma filled waveguides, Physics, Instrumentation
Subjects: Science > Physics
Department: Faculty of Science > Physics
Technology and Innovation Centre > Advanced Science and Technology
Depositing user: Pure Administrator
Date deposited: 08 Aug 2012 10:59
Last modified: 12 Sep 2018 21:13
Related URLs:
URI: https://strathprints.strath.ac.uk/id/eprint/40768
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