High peak power and high average power subnanosecond modulator operating at a repetition frequency of 3.5 kHz

Yalandin, M. I.; Lyubutin, S. K.; Oulmascoulov, M.R.; Rukin, S. N.; Shpak, V. G.; Shunaĭlov, S. A.; Slovikovsky, B.G.

doi:10.1109/tps.2002.805383

Cited by 59 publications

(10 citation statements)

References 11 publications

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“…Figure 1e shows the adjustable voltage pulses used in the experiments. These pulses were created by a high-voltage generator which included the RADAN-303 5-nanosecond driver [54] and inductive-capacitive pulse compression unit [55] with sharpening and cut-off nitrogen spark gaps [56]. The pulse full width at half maximum (FWHM) was varied from ≈200 to ≈500 ps.…”

Section: Experimental Setup and Diagnostic Methodsmentioning

confidence: 99%

Emission Features and Structure of an Electron Beam versus Gas Pressure and Magnetic Field in a Cold-Cathode Coaxial Diode

et al. 2022

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The structure of the emission surface of a cold tubular cathode and electron beam was investigated as a function of the magnetic field in the coaxial diode of the high-current accelerator. The runaway mode of magnetized electrons in atmospheric air enabled registering the instantaneous structure of activated field-emission centers at the cathode edge. The region of air pressure (about 3 Torr) was determined experimentally and via analysis, where the explosive emission mechanism of the appearance of fast electrons with energies above 100 keV is replaced by the runaway electrons in a gas.

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Section: Experimental Setup and Diagnostic Methodsmentioning

confidence: 99%

Emission Features and Structure of an Electron Beam versus Gas Pressure and Magnetic Field in a Cold-Cathode Coaxial Diode

et al. 2022

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“…However, this requirement is hard to satisfy in the high-voltage systems. The problem is that high-voltage subnanosecond generators on the basis of gas spark switches with rare exception (see, for example, [8]) form unstable-shape pulses. Even when pulse amplitude and front are sufficiently stable, its duration varies from pulse to pulse.…”

Section: B Simple Example Of High-voltage Tdrmentioning

confidence: 99%

High-voltage picosecond reflectometry in investigations of dynamic characteristics of discharge gaps

Yalandin

Sharypov

Shpak

et al. 2011

2011 IEEE Pulsed Power Conference

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Special features of high-voltage measurements with a study of picosecond discharge and emissive processes in gas-filled and vacuum gaps are examined. We discuss a specificity of reflectometry procedure in investigations of resistive properties variations for such nonlinear loads of high-voltage pulse generators. The measurement method providing the possibility to minimize distortions of the signal reflected from dynamic load is analyzed.

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“…If the capacitor C is charged negatively to the voltage V 0 using a direct‐current (dc) high‐voltage power supply, the charges are released from the capacitor by closing the switch SW. As a result, the current flows to the LC circuit governed by Equation (1):34 where t is time from turn‐on of the closing switch, R is the circuit resistance ( R < 4 L / C ), and $\omega _0 = \sqrt {{1 \over {LC}} - \left( {{R \over {2L}}} \right)^2 }$ . When SOS diodes are used as the opening switch shown in Figure 1(a), the circuit current flows through the SOS diodes as a forward‐pumping current during a half period $T_{\rm F} \approx {\rm \pi }\sqrt {LC}$ of LC oscillation 35. After the current direction reverses with LC oscillation, the reverse current is injected into the SOS during the period T R .…”

Section: Basic Arrangement Of the Pulsed Power Generatormentioning

confidence: 99%

“…After the injection phase T R , the circuit current is interrupted by a short duration T O . With the current interrupted by the SOS, a high‐voltage pulse is produced as follows: and can be applied to a load as a short nanosecond pulse 32,35–37. An IES pulsed power generator is classified as a type of voltage amplifier caused by a quick interruption of a circuit current using the opening switch in the same manner as a surge voltage (inductive voltage).…”

Section: Basic Arrangement Of the Pulsed Power Generatormentioning

confidence: 99%

Production of an Atmospheric‐Pressure Glow Discharge Using an Inductive Energy Storage Pulsed Power Generator

Takaki

Kirihara

Noda

et al. 2006

Plasma Processes & Polymers

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Summary: An atmospheric‐pressure glow discharge has been generated using an inductive energy storage pulsed power generator. A pulsed high voltage with a short rise time of under 30 ns is employed to generate streamer discharges simultaneously at all tips of a needle‐array electrode in nitrogen. The large number of streamer discharges prevent glow‐to‐arc transitions caused by inhomogeneous thermalization. SOS diodes are used as an opening switch to shorten the rise time. Circuit parameters such as the capacitance of a primary energy storage capacitor and/or the inductance of a secondary energy storage inductor are determined by experimental results using dummy resistive loads. The results show that circuit parameters adequate for producing atmospheric glow discharges are different from those for producing corona discharges. The energy transfer efficiency of the pulsed power generator has a maximum value of 75% at 193 Ω dummy load resistance. Voltage‐current characteristics of the glow discharge show two regions: constant voltage (normal glow) and an increasing voltage with discharge current (abnormal glow). The glow current is drastically decreased by eliminating the SOS diodes, in which case the charging voltage is directly applied to the electrode. Spatial‐ and time‐averaged electron densities in a positive column are estimated from calculations based on nitrogen swarm data. The electron density is estimated to be 1.8 × 1011 cm−3, which is much larger than 9.7 × 109 cm−3 in the case without the SOS diodes.

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High peak power and high average power subnanosecond modulator operating at a repetition frequency of 3.5 kHz

Cited by 59 publications

References 11 publications

Emission Features and Structure of an Electron Beam versus Gas Pressure and Magnetic Field in a Cold-Cathode Coaxial Diode

Emission Features and Structure of an Electron Beam versus Gas Pressure and Magnetic Field in a Cold-Cathode Coaxial Diode

High-voltage picosecond reflectometry in investigations of dynamic characteristics of discharge gaps

Production of an Atmospheric‐Pressure Glow Discharge Using an Inductive Energy Storage Pulsed Power Generator

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