Observation of the Plasma Plume at the Anode of High-Current Vacuum Arc

Batrakov, A. V.; Попов, С. А.; Schneider, A. V.; Sandolache, G.; Rowe, S.

doi:10.1109/tps.2011.2117444

Cited by 47 publications

(11 citation statements)

References 8 publications

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“…When the arc current is high enough, the energy flux directed from the arc column to the anode can heat the electrode surface to a sufficiently high temperature, leading to significant anode evaporation into the arc column [1]. The arc parameters and the arc appearance with an active anode have been studied mainly by means of optical emission spectroscopy [2][3][4][5][6][7][8] and analysis of the arc images obtained from a high-speed camera [8][9][10]. Based on these studies, the anode activity is divided into several high-current anode modes, namely diffuse, footpoint, anode spot and anode plume mode [1].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation and experimental investigation of transient anode surface temperature in vacuum arc

Yang¹,

Wang²,

Gortschakow³

2021

J. Phys. D: Appl. Phys.

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In this paper, the spatial-temporal evolution of the anode temperature in the vacuum arc during the formation of an anode spot is investigated by numerical simulation and experiments. A transient self-consistent model is established to calculate the arc parameters and the anode temperature. The simulations predict that the maximum anode temperature always occurs after the current peak. Ion density and atom density at the anode side increase significantly during the formation of the anode spot. In the anode spot mode, more evaporated anode material comes into the arc column, leading to higher plasma temperature around the spot. The anode vapor can reduce the energy flux from the plasma to the anode center, providing more uniform anode temperature distribution and correspondingly smoother plasma parameter distributions in the vicinity of the anode center. In addition, a higher Cr fraction in the electrodes can result in a higher anode temperature. Near-infrared spectroscopy and high-speed camera thermography are used to study the anode temperature experimentally in order to verify the simulation results. A reasonable agreement was found.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation and experimental investigation of transient anode surface temperature in vacuum arc

Yang¹,

Wang²,

Gortschakow³

2021

J. Phys. D: Appl. Phys.

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“…In both types of contacts observed anode plume as described in [8]. However, at high currents and high voltages began to appear differences.…”

Section: Resultsmentioning

confidence: 70%

On breaking capacity of the CuCr25 composite material produced with electron-beam cladding

Schneider

Попов

Durakov

et al. 2012

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

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“…where n * and n are the number density on the excited state and on the ground state respectively, E exc is the level energy, k is the Boltzmann constant, and T e is the electron temperature. In addition, each pixel in the image represents line-integrated light emission [21]. To make a comparison, the number density in figure 15 is multiplied by the Boltzmann factor according to equation ( 1) and then integrated along the observation direction.…”

Section: Comparison With Experimental Resultsmentioning

confidence: 99%

Numerical investigation on transient arc characteristics and anode surface temperature considering the electrode movement

Yang¹,

Wang²,

Zhang³

et al. 2022

J. Phys. D: Appl. Phys.

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This work investigates the transient anode temperature and plasma parameters considering the electrode movement and the arc expansion. A transient self-consistent model is established using the dynamic mesh approach. Two cases with different maximum arc currents, representing various anode activity, have been studied. The simulations predict significant changes in spatial distribution of species densities, electron temperature and anode surface temperature in case with the anode spot formation. Furthermore, the influence of opening velocity on the plasma parameters has been studied numerically. The model was validated by comparison with experimental data for anode surface temperature as well as spectrally filtered arc images. Results of this comparison are presented and discussed.

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Observation of the Plasma Plume at the Anode of High-Current Vacuum Arc

Cited by 47 publications

References 8 publications

Numerical simulation and experimental investigation of transient anode surface temperature in vacuum arc

Numerical simulation and experimental investigation of transient anode surface temperature in vacuum arc

On breaking capacity of the CuCr25 composite material produced with electron-beam cladding

Numerical investigation on transient arc characteristics and anode surface temperature considering the electrode movement

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