Temporal structure of the fast electron beam generated in the pseudospark discharge with external triggering

Korolev, Yu. D.; Франц, О. Б.; Geyman, V. G.; Landl, N. V.; Ivashov, R.V.; Shemyakin, I. A.; Bischoff, R.; Frank, K.; Petzenhauser, I.

doi:10.1109/tps.2005.856533

Cited by 16 publications

(8 citation statements)

References 15 publications

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“…The studies were conducted as a assemble design with a simple electrode system consisting of a hollow cathode and the anode with a hole on the axis [11,12] and at a sealed-off pseudospark switches series of prototypes TDI [2]. In some cases, cathodes divided were used, allowing current to record the current on different parts of the electrodes.…”

Section: Experimental Equipment and Methodicsmentioning

confidence: 99%

Investigation of the high current stages in pseudospark discharge

Korolev

Франц

Landl

et al. 2012

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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The paper focuses on the stages of dense and superdense glow discharges. The process of discharge development is considered. The data on threshold current density at the cathode, at which the discharge passes from the dense phase of a glow discharge to a superdense glow form, are presented for various gases. The causes that initiate this transition are analyzed. Analysis of birth-death processes of charged particles in plasma based on measuring the discharge parameters is carried out. The mechanisms of charge transport and energy input into plasma are considered.

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Section: Experimental Equipment and Methodicsmentioning

confidence: 99%

Investigation of the high current stages in pseudospark discharge

Korolev

Франц

Landl

et al. 2012

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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“…Interpretation of the processes in the stage of the delay time to breakdown have been carried out in numerous papers [2,12,14,[64][65][66][67][68][69]. The physical model for the low-pressure discharge formation at the prebreakdown stage has been proposed and developed in [2,12,14].…”

Section: Discharge Development At the Stage Of Delay Time To Breakdownmentioning

confidence: 99%

“…The electron beams are obtained in the single gap or multi-gap electrode systems where the anode plates have central bore holes. A variety of experimental data on the investigation of the process of the beam generation and on the applications of the beams has been presented in the current literature [12,39,65,[71][72][73][74][75]. In most cases, the beam is produced at the stage of delay time to breakdown.…”

Section: Discharge Development At the Stage Of Delay Time To Breakdownmentioning

confidence: 99%

“…Proceeding from the above-described model, it seems evident that the acceleration of the electrons occurs in the region d eff at the stage when the cathode voltage drop forms. Aside from that, the electron beam can appear when the phenomenon of the short current interruption takes place [57,65,76].…”

Section: Discharge Development At the Stage Of Delay Time To Breakdownmentioning

confidence: 99%

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Low-pressure discharges with hollow cathode and hollow anode and their applications

Korolev¹,

Koval²

2018

J. Phys. D: Appl. Phys.

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The review relates to low-pressure discharges with a hollow cathode and a hollow anode. The term ‘low pressure’ implies that a neutral particle density is extremely small and the electron free path for ionization is in excess of the characteristic size for the discharge gap. On the other hand, the neutral particles still play an essential role in forming the gas-discharge plasma. Thus, the discharge regimes keep an intermediate position between the classical low-pressure discharge with avalanche ionization and pure vacuum discharge that burns in the cathode metal vapor. New approaches to the interpretation of the discharge formation mechanism at the stage of delay time to breakdown, and for the discharge sustaining features at the later temporal stages, are discussed. The developed approaches offer the possibility of interpreting the discharge behavior in the systems to obtain a uniform plasma in a large volume of the cathode or anode cavity, in the sources of electron and ion beams based on the plasma cathode and in the high-current pseudospark switches.

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“…The low-pressure discharge in a narrow gap exposed to such high voltage is characterized as a discharge existing under a strong overvoltage regime with the magnitude of the reduced electric field E/N > 10 5 Td. Such a huge electric field in the gap provides the appearance of so-called runaway electrons [10][11][12][13][14] effectively forming the emergent e-beam with the energy close to the applied voltage. The breakdown process of the strongly overvoltage open discharge (SOOD) cannot be described by the concept of Townsend electron avalanches.…”

Section: Introductionmentioning

confidence: 99%

Three-electrode strongly overvoltage open discharge in D ₂ as an effective source of the high-current beam of runaway electrons with energy up to 25 keV

Akishev¹,

Aponin²,

Karalnik³

et al. 2018

J. Phys. D: Appl. Phys.

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The objective of this paper is the so-called open discharge in the pulsed overvoltage regime generating the high-current electron beam of runaway electrons. Due to the modification of the electrode system of the open discharge by introducing of the third electrode, we were able to appreciably improve the transverse homogeneity of the generated e-beam. Besides, this novelty allows us to increase both the stability of this discharge and energy of runaway electrons up to 25 keV. The extended set of experimental data characterizing the overvoltage regime of the pulsed open discharge in deuterium at low pressure is presented. The mechanisms responsible for the breakdown, sustaining and instability of the strongly overvoltage pulsed discharge in a narrow gap are also discussed on the basis of the performed numerical calculations.

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Temporal structure of the fast electron beam generated in the pseudospark discharge with external triggering

Cited by 16 publications

References 15 publications

Investigation of the high current stages in pseudospark discharge

Investigation of the high current stages in pseudospark discharge

Low-pressure discharges with hollow cathode and hollow anode and their applications

Three-electrode strongly overvoltage open discharge in D ₂ as an effective source of the high-current beam of runaway electrons with energy up to 25 keV

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Temporal structure of the fast electron beam generated in the pseudospark discharge with external triggering

Cited by 16 publications

References 15 publications

Investigation of the high current stages in pseudospark discharge

Investigation of the high current stages in pseudospark discharge

Low-pressure discharges with hollow cathode and hollow anode and their applications

Three-electrode strongly overvoltage open discharge in D 2 as an effective source of the high-current beam of runaway electrons with energy up to 25 keV

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Product

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Three-electrode strongly overvoltage open discharge in D ₂ as an effective source of the high-current beam of runaway electrons with energy up to 25 keV