Picosecond High Pressure Gas Switch Experiment

Cravey, W.R.; Freytag, E.; Goerz, D.A.; Poulsen, Peter Behrensdorff; Pincosy, P. A.

doi:10.1109/ppc.1993.513379

Cited by 17 publications

(3 citation statements)

References 5 publications

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“…Moreover, the lifetime of these devices is relatively short, and their high-voltage capability is limited [6]. High-pressure hydrogen-filled [7] or oil-filled [8] spark gaps are capable of switching very high voltages in less than 200 ps but are limited in their pulse repetition rate. Additionally, in high-power systems, the working life of spark gaps is severely limited by electrode erosion.…”

Section: Introductionmentioning

confidence: 99%

Simulation Studies for Nonlinear-Transmission-Line Based Ultrafast Rise Times and Waveform Shaping for Pulsed-Power Applications

Zhao

Joshi

Rogers

et al. 2008

IEEE Trans. Plasma Sci.

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The generation of high-voltage electrical pulses with very fast rise times is important for several pulsed-power applications. Although several techniques and devices have been used to generate ultrashort rise-time pulses, most suffer from problems relating to reliability, lifetime, and power-handling capacity. Here, the concept of using nonlinear transmission lines is used for attaining ultrashort rise times and pulse sharpening. Numerical simulations are carried out using barium strontium titanate as the dielectric system. The concept is based on using the nonlinear voltage-dependent capacitance of the granular material. The presence of internal grains increases the breakdown strength and also provides for a nonlinear voltage-dependent capacitance that depends on the internal grain size. The output characteristics of transmission lines based on such nonlinear material are simulated. Our results clearly demonstrated rise-time shortening. The results were in agreement with some published experimental data.Index Terms-Barium strontium titanate (BST), highvoltage pulsing, nonlinear transmission lines, rise-time sharpening, Voronoi network model analysis.

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Section: Introductionmentioning

confidence: 99%

Simulation Studies for Nonlinear-Transmission-Line Based Ultrafast Rise Times and Waveform Shaping for Pulsed-Power Applications

Zhao

Joshi

Rogers

et al. 2008

IEEE Trans. Plasma Sci.

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“…High pressure gas switches, with N 2 or H 2 , for example, have been shown to produce risetimes on the order of 50 to 200 ps [1,2,3], and their principle of operation is described in terms of standard gas breakdown, i.e. the Townsend and streamer mechanism.…”

Section: Introductionmentioning

confidence: 99%

Subnanosecond Breakdown of Insulating Media

Krompholz¹,

Hatfield²

2006

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“…The generation of high-voltage high-power electrical pulses with very fast rise-times is difficult to achieve directly because high-voltage switches with very short turn on times do not satisfy simultaneously the requirements of being reliable, being able to switch at high-power levels, and the capability of being triggered repeatedly at high frequencies. For example, high-pressure hydrogen-filled [1,2] or oilfilled [3] spark gaps are capable of switching very high voltages in less than 200 ps but are limited to a pulse repetition rate of around 1 kHz. In addition, in high-power systems the working life of spark gaps is severely limited by electrode erosion.…”

Section: Introductionmentioning

confidence: 99%

Fast-rise-time electromagnetic shock waves in nonlinear, ceramic dielectrics

Branch

Smith

1996

J. Phys. D: Appl. Phys.

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The generation of fast rise-time electromagnetic shock waves in nonlinear transmission lines containing ceramic ferroelectric dielectrics is investigated. The theory of shock wave evolution is explored and used to determine the desired characteristics of the nonlinear dielectric. The rise-time which would be expected in a barium - strontium titanate based ceramic dielectric is estimated from the material properties. This is compared with the actual rise-time obtained in a parallel plate transmission line made from blocks of the ceramic. Shock waves have been generated with amplitudes of 10 kV and 5 kA and a rise-time of 410 ps. The problems associated with measuring the rise-time of the shock waves are discussed.

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Picosecond High Pressure Gas Switch Experiment

Cited by 17 publications

References 5 publications

Simulation Studies for Nonlinear-Transmission-Line Based Ultrafast Rise Times and Waveform Shaping for Pulsed-Power Applications

Simulation Studies for Nonlinear-Transmission-Line Based Ultrafast Rise Times and Waveform Shaping for Pulsed-Power Applications

Subnanosecond Breakdown of Insulating Media

Fast-rise-time electromagnetic shock waves in nonlinear, ceramic dielectrics

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