Determination of Cr density during high-current anode modes in vacuum           arc

A. Khakpour; S. Gortschakow; St. Franke; R. Methling; S. Popov; D. Uhrlandt

doi:10.1063/1.5086543

Determination of Cr density during high-current anode modes in vacuum arc

Journal of Applied Physics ◽

10.1063/1.5086543 ◽

2019 ◽

Vol 125 (13) ◽

pp. 133301 ◽

Cited By ~ 6

Author(s):

A. Khakpour ◽

S. Gortschakow ◽

St. Franke ◽

R. Methling ◽

S. Popov ◽

...

Keyword(s):

Vacuum Arc ◽

High Current

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Method of determination of the electron density in the gap of high-current vacuum arc on the base of continual radiation analysis

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

10.1109/deiv.2012.6412524 ◽

2012 ◽

Cited By ~ 5

Author(s):

A. A. Logachev ◽

M. V. Lisnyak

Keyword(s):

Electron Density ◽

Vacuum Arc ◽

High Current ◽

Method Of Determination

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Determination of Cr Density in the Active Phase of a High-current Vacuum Arcs

Plasma Physics and Technology Journal ◽

10.14311/ppt.2017.2.190 ◽

2017 ◽

Vol 4 (2) ◽

pp. 190-193 ◽

Cited By ~ 2

Author(s):

S. Gortschakow ◽

A. Khakpour ◽

S. Popov ◽

St. Franke ◽

R. Methling ◽

...

Keyword(s):

High Speed ◽

Active Phase ◽

State Density ◽

Vacuum Arc ◽

Anode Surface ◽

High Current ◽

Electrode Gap ◽

Broadband Absorption ◽

Vapour Density

Melting and evaporation of the anode surface strongly influence the interruption capability of vacuum circuit breakers, because they lead to injection of atomic vapour into the inter-electrode gap. Determination of the vapour density and its dynamics with respect to different anode phenomena is therefore of great importance. Results of Cr density measurements in a high-current vacuum arc by using broadband absorption spectroscopy are presented. The vapour density of atomic Cr is determined after the formation of anode spots as well as close to the current zero. Cr I resonance lines at 425.43 nm have been used for the analysis. An AC current pulse with maximum value of 7 kA and a frequency of 100 Hz is applied to a vacuum arc between two cylindrical butt electrodes made of CuCr7525 with a diameter of 10 mm. The high-current anode modes are observed by means of high-speed camera imaging. The temporal evolution of the Cr ground state density is presented and discussed.

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Determination of the voltage drop on a high-current vacuum arc discharge under conditions of a limited cross-section of the plasma flow

Journal of Physics Conference Series ◽

10.1088/1742-6596/2064/1/012019 ◽

2021 ◽

Vol 2064 (1) ◽

pp. 012019

Author(s):

A G Rousskikh ◽

A S Zhigalin ◽

V I Oreshkin ◽

P Artyomov

Keyword(s):

Cross Section ◽

Plasma Flow ◽

Voltage Drop ◽

Arc Discharge ◽

Vacuum Arc ◽

High Current ◽

Plasma Gun ◽

Flow Through ◽

Arc Current

Abstract The work is devoted to the study of the high-current vacuum arc discharge characteristics under conditions of a limited cross-section of the plasma flow. The experiments were carried out on the IMRI-5 setup with a sinusoidal arc current amplitude of 300–350 kA and a rise time of 500 ns. Aluminum rods with diameters from 3 to 7 mm were used as a cathode. The plasma flow was formed in a channel whose diameter was equal to that of the cathode. The features of the formation of a plasma jet with various configurations of the used plasma gun are described. The electrophysical parameters of the arc discharge are presented. Theoretical estimates of the voltage drop across the high-current arc during the outflow of a plasma flow through holes with a limited diameter are provided.

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