On the formation of nanosecond volume discharges, subnanosecond runaway electron beams, and x-ray radiation in gases at elevated pressure

Тарасенко, В. Ф.; Kostyrya, I. D.

doi:10.1007/s11182-006-0056-2

Russ Phys J

2005

DOI: 10.1007/s11182-006-0056-2

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On the formation of nanosecond volume discharges, subnanosecond runaway electron beams, and x-ray radiation in gases at elevated pressure

В. Ф. Тарасенко

I. D. Kostyrya

Abstract: Properties of runaway electron beams and x-ray radiation in a nanosecond volume discharge in air at atmospheric pressure are investigated, and results of recent studies in this direction are analyzed. A physical nature of forming runaway electron beams and x-ray radiation in the nanosecond volume discharge is discussed.

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Cited by 5 publications

(2 citation statements)

References 25 publications

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“…Typical side view framing images of the discharge light emission for a 1.5 cm AC gap supplied by a 1 ns duration HV pulse for different time delays with respect to the beginning of the light emission at the cathode edge at air gas pressure 310 5 have a "contracted" form ( Fig. 2), for AC gaps > 1 cm.…”

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Space- and time-resolved characterization of nanosecond time scale discharge at pressurized gas

Yatom

Vekselman

Gleizer

et al. 2011

Journal of Applied Physics

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mentioning

confidence: 99%

“…Light emission evolution across 1.5 cm AK gap at air pressure of 3105 Pa, 1 ns duration HV pulse. Frame duration -1.5 ns.…”

mentioning

confidence: 99%

Space- and time-resolved characterization of nanosecond time scale discharge at pressurized gas

Yatom

Vekselman

Gleizer

et al. 2011

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

Effect of cathode materials on the generation of runaway electron beams and X-rays in atmospheric pressure air

et al. 2013

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In this work, experiments were performed to study the effect of cathode materials on the amplitude of the super-short avalanche electron beam (SAEB) current and X-ray density during discharges in atmospheric-pressure air. In the experiments, discharges were generated by three nanosecond-pulse generators in air gaps between a plane anode and a tubular cathode made of different metals. The output pulse of the three generators had a rise time of 0.3, 1, 15 ns, and a full width at half maximum of 1, 2, 30–40 ns, respectively. For the generators with pulse rise-time of 0.3 and 1 ns, the cathodes used in these experiments were made of stainless steel, permalloy, titanium, niobium, copper, brass, and aluminum. For the generator with pulse rise-time of 15 ns, the cathodes were made of stainless steel, titanium, copper, and aluminum. When the rise time of the applied pulse is 0.3 ns, our experimental results show that the amplitude of the voltage across the gap depends on the cathode material and reaches its maximum value when a stainless steel cathode is used. It is also observed that, under such situation, the maximum amplitudes of the SAEB current occur at maximum voltages across the gap when all other factors are equal. Furthermore, the amplitude of the SAEB current hereof is found to depend not only on the material of the sharp edge of the tubular cathode, but also on the material of the side surface of the tubular cathode. When the rise time of the applied pulse is 1 ns, the experimental results show that the average number of electrons in SAEB is also affected by the cathode materials. In addition, in the case that the rise time of the voltage pulse is 15 ns and the gap spacing is 8 cm, the experimental results show that the cathode material has no effect on the voltage amplitude across the gap and the X-ray density. The increase of the pulse repetition frequency from 250 to 500 Hz under such condition can lead to a three-fold increase in X-ray density in a repetitive pulsed mode.

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Generation of supershort avalanche electron beams and formation of diffuse discharges in different gases at high pressure

Тарасенко

Бакшт

Бураченко

et al. 2008

Plasma Devices and Operations

132

120

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On the formation of nanosecond volume discharges, subnanosecond runaway electron beams, and x-ray radiation in gases at elevated pressure

Cited by 5 publications

References 25 publications

Space- and time-resolved characterization of nanosecond time scale discharge at pressurized gas

Space- and time-resolved characterization of nanosecond time scale discharge at pressurized gas

Effect of cathode materials on the generation of runaway electron beams and X-rays in atmospheric pressure air

Generation of supershort avalanche electron beams and formation of diffuse discharges in different gases at high pressure

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