Investigations of two-stage-pseudospark switches for high-current applications

Gortler, A.; Schwandner, A.; Christiansen, J.; Frank, K.; Tkotz, R.

doi:10.1109/16.469413

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…HE pseudospark discharge was first discovered in the late 1970's, as an axially symmetric, high voltage gas discharge operating at low pressure regime located on the left hand side of the Paschen curve as illustrated in Fig.1, which is based on the principles of a hollow cathode discharge. [1][2][3] The fundamental discharge configuration consists of planar anode and cathode, or multi-gap electrodes, as illustrated in Fig.2 and Fig.3. The central hole in the middle of the electrodes makes the effective distance of the discharge path a maximum in the region of the bore hole on the axial center of electrodes and cathode cavity.…”

Section: Introductionmentioning

confidence: 99%

“…Pseudospark discharge is a pulsed gas discharge in which the gas discharge can obtain 10s to 100s of kV voltage hold-off capability and kA discharge current during total time of discharge of 10s to 100s ns, and several ns rise time. The physical volume of pseudospark discharge chamber is at 10s of cm 3 . Thus the pseudospark discharge component can obtain the 10s of kV hold-off voltage and high current rising rate of 10 10 to 10 11 A/s within a 10s of cm 3 volume, which makes it suitable for compact pulsed power drive.…”

Section: Introductionmentioning

confidence: 99%

“…The physical volume of pseudospark discharge chamber is at 10s of cm 3 . Thus the pseudospark discharge component can obtain the 10s of kV hold-off voltage and high current rising rate of 10 10 to 10 11 A/s within a 10s of cm 3 volume, which makes it suitable for compact pulsed power drive. 5 Besides the high voltage high current hold-off capability, the pseudospark is a lowpressure gas discharge operated on the left branch of Paschen curve.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigations of High Voltage Pulsed Pseudospark Discharge and Intense Electron Beams

Rovey

2012

50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

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A high voltage pulsed discharge device which can produce intense high energy electron beam named "pseudospark" is presented in this work. This discharge device is able to hold 10s of kV voltage, kA current and 10 10-10 11 A/s current rising rate. The pseudospark device is also a simply-constructed source for intense electron beam with high energy. The presented experimental investigation is focused on the discharge properties of pseudospark and the plasma-produced electron beam characteristics for current and potential applications in aerospace problems. The discharge property results show the presented pseudospark device has the hold-off voltages up to 26 kV and discharge current of 2 kA with current rising rate of 1 × 10 11 A/sec. And the comparative study on various discharge configurations show the capability of pseudospark device to hold voltage and high current generation in short pulse can be further improved by the device geometric configuration, leading to higher pulsed load drive capability. The intense electron beam obtained from the multi-gap pseudospark device has a current up to 132.2 A, and electron number is varied from 4×10 15 to 2×10 16 in the presented operation voltage range obtained from 10s of cm 3 charged particle channel. The energy analysis on this pseudospark-produced electron beam displays the "double-hump" non-Maxwellian energy distribution. The maximum energy peak value varies from 900 eV to 6.3 keV under 4 kV to 12 kV discharge voltage. Specifically, comparison of the beam parameters obtained from pseudospark device and the electron beam requirement for a MHD channel indicates pseudospark is a promising electron source.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Investigations of High Voltage Pulsed Pseudospark Discharge and Intense Electron Beams

Rovey

2012

50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

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Experimental Investigations on Trigger Characteristics of Pseudo-spark Switch Based on Surface Flashover Technology

Yao

Chen

Zhengzhong

2007

Plasma Sci. Technol.

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A trigger device and a triggered pseudospark switch (TPSS) were designed based on surface flashover technology, in order to meet the requirements from present pulse power technology and pulse current test technology such as a long lifetime, reliability in a wide voltage range, a short delay time, as well as small delay jitters. The trigger devices were made from different dielectric materials, with their permittivities from tens to thousands. The trigger characteristics of TPSS were investigated. The results indicate that the high-dielectric trigger device shows better performance and higher emitted charge of the electron emission within all adjusted parameters including the gas pressure and applied voltage. For the dielectric material with relative permittivity εr of 3460, when the gas pressure is 7 Pa, the hold-off voltage of TPSS is 28 kV, the minimum trigger switch voltage drops to 128 V, the minimum discharging delay time and delay jitter are less than 35ns and 6ns, respectively, and the reliable operation can be reached within a very large range of charging voltage, between 0.46% and 99% of its self-breakdown voltage.

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Progress in enhanced triggering and increasing of hold-off voltage capability with pseudospark plasma switches

Frank

Bickes²,

Ernst³

et al.

Conference Record of the Twenty-Third International Power Modulator Symposium (Cat. No. 98CH36133)

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Investigations of two-stage-pseudospark switches for high-current applications

Cited by 4 publications

References 10 publications

Experimental Investigations of High Voltage Pulsed Pseudospark Discharge and Intense Electron Beams

Experimental Investigations of High Voltage Pulsed Pseudospark Discharge and Intense Electron Beams

Experimental Investigations on Trigger Characteristics of Pseudo-spark Switch Based on Surface Flashover Technology

Progress in enhanced triggering and increasing of hold-off voltage capability with pseudospark plasma switches

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