Synchronously operated nano- and subnanosecond pulsed power modulators

Shpak, V. G.; Shunaĭlov, S. A.; Oulmascoulov, M.R.; Yalandin, M. I.

doi:10.1109/ppc.1999.823809

Cited by 7 publications

(10 citation statements)

References 6 publications

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“…The discharger from another side of FL short--circuits its central and shielding electrodes and forms second peak of pulse with opposite polarity. For shaping of pulses of subnanosecond time duration the device operated in a travelling wave mode and the process detailed in [2].…”

Section: Principle Of Operationmentioning

confidence: 99%

“…Device proposed in this work, like in [1], presents high voltage unit of energy compression and consists of forming and high impedance lines (FL and HL) with wave impedances Z FL and Z HL with divisible delay times (t HL , t FL ), which were connected in series as shown in Fig. 1a.…”

Section: Principle Of Operationmentioning

confidence: 99%

“…Charging of FL with an increase in the peak * corresponding author; e-mail: marat@iep.uran.ru power occurs in the travelling wave mode when HL and FL were connected to initial generator (Z 0 ) in series, see Refs. [1,3].…”

Section: Principle Of Operationmentioning

confidence: 99%

“…1b) and form the part of pulse, whose polarity coincides with the polarity of initial nanosecond pulse. Scheme based on PD in contrast to serial (SD) connection of elements FL, HL and Load [1], made it possible to transmit into the load the energy, accumulated not only in FL, but also large part of the HL energy and to increase the energy effectiveness of device. Similar discharge mode of two parallel lines for a load was presented in our previous work [4].…”

Section: Principle Of Operationmentioning

confidence: 99%

“…High voltage active monocycle former (MF) in [2] allowed forming stable bipolar pulses with pulse duration 1 ns and peak-to-peak amplitude 250 kV in the mode of preliminarily peaking of rise time of initial nanosecond pulse. For that an additional gas discharger was used, which deteriorated waveform stability, introduced additional energy losses and increased dimensions of device.…”

Section: Introductionmentioning

confidence: 99%

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High Voltage Subnanosecond Monocycle Active Former Based on Compression Energy Unit

2009

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Compact high voltage subnanosecond monocycle former (MF) was tested. The device was designed on base of energy compression device and operated in a travelling wave mode. MF consists of high impedance and forming lines, which discharged for the load in parallel. As a result, the monocycle with pulse duration ∼ 1 ns and typical peak-to-peak amplitude ∼ 250 kV was formed without additional peaking of the nanosecond pulse rise time. Some pulses reached the maximum amplitude ∼ 270 kV. The parallel discharge circuit, and a spiral shape of forming line allowed keeping small dimensions of MF, and save enough electrical strength to operate with pulse repetition rate up to 100 pps.

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Section: Principle Of Operationmentioning

confidence: 99%

Section: Principle Of Operationmentioning

confidence: 99%

Section: Principle Of Operationmentioning

confidence: 99%

Section: Principle Of Operationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High Voltage Subnanosecond Monocycle Active Former Based on Compression Energy Unit

2009

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Streak investigations of the initial phase of a subnanosecond pulsed electrical breakdown of high-pressure gas gaps

Ivanov¹,

Lisenkov²,

Shpak³

2010

J. Phys. D: Appl. Phys.

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The initiation and the development of a breakdown of highly overvoltaged high-pressure (from 4 to 40 atm) gas gaps by voltage pulses having the risetime of 1 ns or shorter are studied experimentally and in theoretical terms. The study revealed that ionization processes leading to the breakdown start in the gas volume and not from the surface of the electrodes. The gap flashover is followed by ionization wave processes initiating in the gas volume and playing the decisive role at the first phase of the breakdown. The dynamics of the ionization waves strongly depends on the initial distribution of free electrons over the gas gap. The distribution of ionization waves is analysed when the initial electrons are distributed uniformly and nonuniformly over the gap. The calculation results are in qualitative agreement with the relevant experimental data. It is shown that the propagation of the ionization waves at the initial stage of subnanosecond pulsed electrical breakdown of gas leads to a redistribution of the electric field in the discharge gap and a region of a strong field, whose intensity is sufficient for the onset of emission processes and the generation of a short beam of fast electrons near the cathode, is formed at the cathode for a very short (up to 100 ps) time.

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Novel schemes of production and amplification of superradiance pulses by short intense electron beams

Zotova

Sergeev

Rozental

et al. 2007

2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz El

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Synchronously operated nano- and subnanosecond pulsed power modulators

Cited by 7 publications

References 6 publications

High Voltage Subnanosecond Monocycle Active Former Based on Compression Energy Unit

High Voltage Subnanosecond Monocycle Active Former Based on Compression Energy Unit

Streak investigations of the initial phase of a subnanosecond pulsed electrical breakdown of high-pressure gas gaps

Novel schemes of production and amplification of superradiance pulses by short intense electron beams

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