The statistics of ionization currents in gases between parallel plates

Davidson, P. M.

doi:10.1088/0370-1328/83/2/310

Cited by 19 publications

(11 citation statements)

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“…Which discharge mechanism will occur depends on parameters such as electric field strength, surface geometry, dielectric breakdown strength and separation velocity. However, all of these discharging processes through a gas have stochastic contributions like the probabilistic presence of ions formed by background radiation or illumination, stochastic collisional ionization of gas molecules and erratic path finding of streamers and sparks [56,57]. In consequence, the realized conductance and the time the discharging persists will change stochastically.…”

Section: Mechanisms Of Triboelectricitymentioning

confidence: 99%

Double origin of stochastic granular tribocharging

et al. 2018

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The mechanisms underlying triboelectric charging have a stochastic nature. We investigate how this randomness affects the distributions of charges generated on granular particles during either a single or many collisions. The charge distributions we find in our experiments are more heavy-tailed than normal distributions with an exponential decay of the probability, they are asymmetric, and exhibit charges of both signs. Moreover, we find a linear correlation between the width and mean of these distributions. We rationalize these findings with a model for triboelectric charging which combines stochastic charge separation during contact and stochastic charge recombination after separation of the surfaces. Our results further imply that subsequent charging events are not statistically independent.

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Section: Mechanisms Of Triboelectricitymentioning

confidence: 99%

Double origin of stochastic granular tribocharging

et al. 2018

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“…Two fundamental conditions must be satisfied for the breakdown to occur: at least one free electron should be present in the interelectrode gap and the electric field should be sufficiently high to multiply the electrons. Several theoretical studies [2][3][4][5][6][7] of the initial stage of a breakdown have been developed, taking into account the nondeterministic nature of both these phenomena.…”

Section: Introductionmentioning

confidence: 99%

Breakdown delay times and memory effects in helium at low pressure

Kudrle

Leduc

Fitaire

1999

J. Phys. D: Appl. Phys.

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Abstract. When the series of voltage pulses is applied to a gas-filled discharge tube, one observes that a breakdown and the subsequent discharge will influence the probability of the next breakdown. Repeating the measurement of the breakdown delay time τ many times we can determine the distribution of τ and subsequently decompose breakdown delay time into a formative time lag and the statistical delay time. Our measurements show that even a measurement taken 10 min after the last breakdown is influenced by it. The processes in a volume being unimportant due to a flow mode of operation, it is proposed that the memory effect is caused by some surface processes. The experiments are carried out in a discharge tube with two plane-parallel electrodes separated by 2 cm in a pressure range of several Torr. In this paper, dependences of both statistical delay time and formative time lag on the repetition rate, discharge duration and anode voltage are presented.

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“…Taylor [15] has defined a threshold preionization th for a good glow discharge for which there is no influence on laser electron density n~o output when the preionization density changes. It is difficult to give the exact value of the minimum preionization electron number ;~n for each avalanche or the minimum preionization density Vmin -min (14) nto h = = vm~nav Vc for a good glow discharge. The analysis of the data given in ref.…”

Section: P(~'ne'ne) "-2-~ ~E \ Ne ]mentioning

confidence: 99%