Influence of different cathode surfaces on the breakdown time delay in neon DC glow discharge

Stamenković, S. N.; Marković, Vera; Gocić, S. R.; Jovanović, Aleksandar P.

doi:10.1016/j.vacuum.2012.09.010

Cited by 14 publications

(2 citation statements)

References 24 publications

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“…The occurrence of mixture distribution implies the existence of two separate subpopulations caused by two mechanisms or particles. [31,32] The mean value of formative time delay is given by the following relation: [30] tf…”

Section: Resultsmentioning

confidence: 99%

Conversion of an atomic to a molecular argon ion and low pressure argon relaxation

Stankov¹,

Jovanović²,

Marković³

et al. 2016

Chinese Phys. B

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The dominant process in relaxation of DC glow discharge between two plane parallel electrodes in argon at pressure 200 Pa is analyzed by measuring the breakdown time delay and by analytical and numerical models. By using the approximate analytical model it is found that the relaxation in a range from 20 to 60 ms in afterglow is dominated by Ar + 2 ions, produced by atomic-to-molecular conversion of Ar + ions in the first several milliseconds after the cessation of the discharge. This conversion is confirmed by the presence of double-Gaussian distribution for the formative time delay, as well as conversion maxima in a set of memory curves measured in different conditions. Finally, the numerical one-dimensional (1D) model for determining the number densities of dominant particles in stationary DC glow discharge and two-dimensional (2D) model for the relaxation are used to confirm the previous assumptions and to determine the corresponding collision and transport coefficients of dominant species and processes.

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Section: Resultsmentioning

confidence: 99%

Conversion of an atomic to a molecular argon ion and low pressure argon relaxation

Stankov¹,

Jovanović²,

Marković³

et al. 2016

Chinese Phys. B

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show abstract

“…При нагреве на их поверхности могут формироваться тонкие диэлектрические оксидные пленки толщиной 10 1 −10 2 nm, испарение вещества которых в разряде компенсируется его поступлением из объема электрода в результате диффузии. В результате при протекании разрядного тока на электроде, выполняющем функции катода, происходит накопление положительных зарядов [23,24], приводящее к возникновению в пленке электрического поля с напряженностью, достаточной для возникновения полевой эмиссии в нее электронов из металлической подложки. Такие электроны ускоряются в пленке полем и, достигая ее внешней границы, нейтрализуют поверхностный заряд, в результате чего устанав-ливается стационарный режим разряда.…”

Section: Introductionunclassified

Влияние Усиленной Электрическим Полем Термической Электронной Эмиссии На Температуру Катода С Тонкой Диэлектрической Пленкой В Дуговом Газовом Разряде

Бондаренко¹,

Дубинина²,

Кристя³

2020

Журнал Технической Физики

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A model of thermal electron emission enhanced by the electric field (thermo-field emission) from the metal cathode substrate into a thin insulating film formed on its surface is developed. A system of equations for the cathode surface temperature in the arc discharge and the electric field strength in the film, providing the required discharge current density, is formulated. It is shown that existence of the dielectric film can result in a considerable reduction of the cathode temperature in the discharge due to lower potential barrier height at the metal-insulator boundary than at the metal-discharge boundary in case of the metal cathode without the film. It is found that due to an enhancement of thermal emission of electrons into the film by the electric field generated in it, an additional decrease of the cathode temperature by about 100 K takes place.

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Influence of the Thermo-Field Electron Emission from the Cathode with a Thin Insulating Film on the Film Emission Efficiency and Ignition Voltage of the Townsend Gas Discharge

Бондаренко

Fisher

et al. 2019

Russ Phys J

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Influence of different cathode surfaces on the breakdown time delay in neon DC glow discharge

Cited by 14 publications

References 24 publications

Conversion of an atomic to a molecular argon ion and low pressure argon relaxation

Conversion of an atomic to a molecular argon ion and low pressure argon relaxation

Влияние Усиленной Электрическим Полем Термической Электронной Эмиссии На Температуру Катода С Тонкой Диэлектрической Пленкой В Дуговом Газовом Разряде

Influence of the Thermo-Field Electron Emission from the Cathode with a Thin Insulating Film on the Film Emission Efficiency and Ignition Voltage of the Townsend Gas Discharge

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