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

Yatom, Shurik; Vekselman, V.; Gleizer, J. Z.; Krasik, Ya. E.

doi:10.1063/1.3573507

Cited by 59 publications

(48 citation statements)

References 9 publications

(2 reference statements)

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“…Moreover, the statement that the runaway electron beam formed in atmospheric pressure air is almost monoenergetic (Babich et al, 2014) and is erroneous in our opinion, because the generation of a monoenergetic runaway electron beam varying at gap voltage and varying current through the gap is rather problematic. The data reported in the cited papers contradict both our results (Baksht et al, 2008a;2008b;2009;Tarasenko et al, 2005;2008;2011;2013) and those reported elsewhere (Mesyats et al, 2011;Yatom et al, 2011). In particular, Mesyats et al (2011) consider that the maximum energy for runaway electrons produced in atmospheric pressure air cannot exceed eU m under any conditions.…”

Section: Introductioncontrasting

confidence: 56%

Reconstruction of electron beam energy spectra for vacuum and gas diodes

et al. 2015

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In this paper, the spectra of electron beams produced in vacuum and gas diodes were analyzed to study the capabilities and limitations of their reconstruction from beam attenuation in foils of different thickness. The electron energy distributions were calculated using the Tikhonov regularization for Fredholm integral equations on minimum a priori assumptions. The spectra reconstructed in the study were those of electron beams, including a supershort avalanche electron beam, produced in experiments on a DUET plasma-cathode electron accelerator and SLEP-150M accelerator.

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Section: Introductioncontrasting

confidence: 56%

Reconstruction of electron beam energy spectra for vacuum and gas diodes

et al. 2015

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“…A cathode for such a discharge type has a small curvature radius and the main geometries used are tube, ball, and planar sharp-edge. 6 A common feature of these discharges is high energy runaway electrons (RAEs), which carry out the pre-ionization of the discharge gap. 1 The studies were performed using He, air, Xe, Kr, Ar, and SF 6 gases.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6] The common approach to obtaining such a discharge without pre-ionization sources is the application of a high voltage (HV) pulse with amplitude of 50-300 kV and duration of 150 ps-20 ns. [1][2][3] The important feature of this discharge is the non-homogeneity of the electric field distribution in the cathode-anode (CA) gap, which is ensured by the form of the cathode.…”

Section: Introductionmentioning

confidence: 99%

Time evolution of nanosecond runaway discharges in air and helium at atmospheric pressure

2012

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Time-and space-resolved fast framing photography was employed to study the discharge initiated by runaway electrons in air and He gas at atmospheric pressure. Whereas in the both cases, the discharge occurs in a nanosecond time scale and its front propagates with a similar velocity along the cathode-anode gap, the later stages of the discharge differ significantly. In air, the main discharge channels develop and remain in the locations with the strongest field enhancement. In He gas, the first, diode "gap bridging" stage, is similar to that obtained in air; however, the development of the discharge that follows is dictated by an explosive electron emission from micro-protrusions on the edge of the cathode. These results allow us to draw conclusions regarding the different conductivity of the plasma produced in He and air discharges. V C 2012 American Institute of Physics. [http://dx.

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“…These EEDF were used as input parameters for the PC simulations described in detail in Ref. 13 for producing x-ray attenuation curves, which were compared with experimental data. These simulations included the electron energy losses in the Ta foil using the data on electron stopping power, 14 and the generation of x-rays is calculated using the forward bremsstrahlung cross-section.…”

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confidence: 99%

X-ray diagnostics of runaway electrons generated during nanosecond discharge in gas at elevated pressures

Yatom

Levko

Gleizer

et al. 2012

Applied Physics Letters

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The properties of high-energy runaway electrons generated during a nanosecond discharge in an air filled diode at pressures up to 3 × 105 Pa were studied using x-ray absorption spectroscopy. The results of studies of the discharge at different pressures and with different lengths of cathode-anode gap allow an insight into the factors that influence the energy distribution of runaway electrons. Energy distribution functions for runaway electrons produced in particle-in-cell simulation were used to create the x-ray attenuation curves via a computer-assisted technique simulating the generation of x-ray by energetic electrons. The simulated attenuation curves were compared to experimental results.

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

Cited by 59 publications

References 9 publications

Reconstruction of electron beam energy spectra for vacuum and gas diodes

Reconstruction of electron beam energy spectra for vacuum and gas diodes

Time evolution of nanosecond runaway discharges in air and helium at atmospheric pressure

X-ray diagnostics of runaway electrons generated during nanosecond discharge in gas at elevated pressures

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