Emission spectra of high-current vacuum arc stabilized by axial magnetic field

Bugaev, V. A.; Dernovskij, V.L.; Logatchev, A.A.; Zabello, K.K.; Shkol'nik, S.M.

doi:10.1109/deiv.2008.4676775

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…In our experiments we used the experimental setup described in detail in [6,11]. Since the measurements were performed in the visible spectrum, the optical system was modified.…”

Section: Methodsmentioning

confidence: 99%

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

Logachev

Lisnyak

2012

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

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In our previous work is shown that in the visual spectral region of radiation of the high-current vacuum arc with copper electrodes there is a spectral "window" that allows to register continuum radiation (including at high-current densities). This fact was used for elaboration of the method of determination of the electron density in the gap of high-current vacuum arc. The method was verified by comparison of the obtained results with known results received by different methods.

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“…In our experiments we used the experimental setup described in detail in [6,11]. Since the measurements were performed in the visible spectrum, the optical system was modified.…”

Section: Methodsmentioning

confidence: 99%

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

Logachev

Lisnyak

2012

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

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“…Another reason for the high predicted temperatures is the large arc current, 44.5 kA, that is used. Bugaev et al [38] showed experimentally that the ion temperature increases as the arc current increases.…”

Section: Vacuum Arc Plasmamentioning

confidence: 99%

Numerical investigation on the influence of circuit breaker structure parameters on vacuum arc behaviors

Zhao¹,

Gou²,

Yang³

et al. 2020

J. Phys. D: Appl. Phys.

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In a switchgear, an external transverse magnetic field (ETMF) is generated by the U type loop consisting of the vacuum interrupter, external busbar and conductive rod connected to the vacuum interrupter. The ETMF will make the vacuum arc deflected and strengthen the contraction of the arc. This can increase the probability of breaking failure. To weaken the adverse effect of the ETMF, the real magnetic field data of the arc area with different structure parameters when the length of conductive rod, external busbar and phase distance is changed are obtained by establishing simulation model in this paper. Taking the real magnetic field data as the boundary condition, this paper obtains the typical parameters of the vacuum arc plasma with different structure parameters by using the established three-dimensional high-current vacuum arc magnetohydrodynamics model. The simulation results show that the ETMF makes the transverse magnetic field (TMF) of the arc area asymmetric, which leads to an arc deflection. Reducing the length of the conductive rod connected to the vacuum interrupter to 50 mm can effectively improve the asymmetry of the TMF caused by the EMTF, weaken the arc deflection phenomenon, make the distribution of the plasma parameters more uniform, and increases the utilization of the anode contact surface. Moreover, it can not only reduce the heat flux density into the anode as a whole, but also reduce the heat flux density in the high heat flux density area, so as to effectively reduce the degree of anode activity and improve the negative effects caused by the anode activity. The changes of other external structural parameters have less influence on the improvement of the vacuum arc deflection phenomenon. Increasing the phase spacing to 275 mm or reducing the length of the external bus bar to 100 mm can only slightly weaken the arc deflection.

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Plasma Spectrochemistry in Material Sciences–Theory and Recent Applications

Richter

2000

Encyclopedia of Analytical Chemistry

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This paper provides an overview about state of the art methods in the field of plasma spectrometry and its application in material science. Different types of plasmas with their special characteristics for various applications are described. Indirect analytical methods involving sample digestion and often also analyte/matrix separation prior to analyzing the samples still represent the most important routine methods. Here, plasma optical emission and mass spectrometry are the most frequently used determination techniques with a wide variety of instruments commercially available. To avoid the risk of analyte loss or of contaminations during an often time consuming and laborious sample preparation, the use of techniques with direct solid sampling is considered an attractive alternative for the analysis of many materials. A survey on applications with a special focus on direct solid sampling techniques such as GDMS, GD‐OES, LA‐ICPMS, ETV‐ICPMS, ETV‐ICP‐OES, DC‐Arc is given. Different possible calibration strategies are discussed.

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Emission spectra of high-current vacuum arc stabilized by axial magnetic field

Cited by 9 publications

References 13 publications

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

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

Numerical investigation on the influence of circuit breaker structure parameters on vacuum arc behaviors

Plasma Spectrochemistry in Material Sciences–Theory and Recent Applications

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