Advanced Optical Diagnostics for Characterization of Arc Plasmas

Gortschakow, Sergey; Franke, Steffen; Methling, Ralf; González, Diego; Uhrlandt, Dirk; Попов, С. А.; Batrakov, A. V.

doi:10.1109/tps.2021.3096289

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…NIR spectroscopy predicts the anode temperature of about 2044.5 K for the instant of 7.58 ms. Then, with the relative intensity of the anode surface obtained from images by high speed camera I, the anode temperature can be deduced with the help of Planck function. Detailed calibration routine is described in the previous work [16,29]. The influence of the arc light is also calibrated [16].…”

Section: Results Of High-speed Camera Thermographymentioning

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: Results Of High-speed Camera Thermographymentioning

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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“…+ Check author entry for coauthors Deshko, K.I., see Bychkov, V.L., 1028-1033 Deshmukh, R.R., see Nimbekar, A.A., TPS Feb. 2021 604-614 Desmons, M., see Weber, M., 2987-2996 Devadevan, M.M., Krishnanand, J., Shilpa, K.B., and Kini, R.N., A Compact, Fast, and Efficient Plasma Cleaner; 3576-3581 Deval, L., see Gahlaut, V., TPS July 2021 2080-2085 Dhabekar, B., see Menon K., R., 2359-2363 Dhakar, A.K., Rai, S.K., Saini, V.K., Sharma, S.K., and Pal, U.N., Simplified High-Voltage Short-Pulse Power Modulator for DBD Plasma Application ; TPS April 2021 1422-1427 Diao, Z., see Shi, Y., 1311-1322 Diao, Z., Tan, Z., Lu, C., Shi, Y., and Wang, X., Behavior of 1936-1940 Drury, O., see Schmidt, A., TPS Nov. 2021 3299-3306 Du, C., see Cai, X., TPS Jan. 2021 191-213 Du, X., see Zhao, J., TPS Oct. 2021 3036-3050 Du, Y., see Wang, T., TPS Dec. 2021 4034-4037 Duan, G., Fang, Z., Fu, J., Yu, P., and Mei, D., Menon K., R., Patel, A.S., K., S., Basak, A., Kumar, R., Chandra, R., Dhabekar, B., Singh, A.K., Mitra, S., Roy, A., Joshi, K.D., and Sharma, A., Characterization of Flash X-Ray Source From a Marx-Based Pulse Power System; TPS Aug. 2021 2359-2363 Merriche, A., see Bouchemla, N., TPS Dec. 2021 3951-3957 Messineo, M., see Khodak, A., TPS Feb. 2021 886-892 Methling, R., see Gortschakow, S., TPS Sept. 20212505-2515 Methling, R., see 2498-2504 Miao, H., see Liu, S., TPS Feb. 2021 899-904 Mihaila, I., see Gerber, I.C., 2359-2363 Mitrani, J., see Schmidt, A., TPS Nov. 2021 3299-3306 Mitsugi, F., Kusumegi, S., Nishida, K., and Kawasaki, T., Visualization of Plasma-Induced Liquid Flow Using KI-Starch and PIV; TPS Jan. 2021 9-14 Mitsugi, F., Wago, M., Sakamoto, R., Nishida, K., and Kawasaki, T., Influence of Retrogradation on KI-Starch Visualization of Reactive Oxygen Species Emitted by Plasma Jets; TPS July 2021 2141-2147 Mitsugi, F., Kikuchi, R., Honda, S., Paiva, V., Sakamoto, J., Nakamiya, T., and Sonoda, Y., Quantification of Two-Dimensional Acoustic Field Generated by a Surface Barrier Discharge With Fiber-Type Optical Wave Microphone Computer Tomography; TPS Nov. 2021 3589-3596 Miura, T., see Takaki, K., TPS Jan. 2021 61-68 Miura, T., Takahashi, K.,…”

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2021 Index IEEE Transactions on Plasma Science Vol. 49

2021

IEEE Trans. Plasma Sci.

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This index covers all technical items-papers, correspondence, reviews, etc.-that appeared in this periodical during 2021, and items from previous years that were commented upon or corrected in 2021. Departments and other items may also be covered if they have been judged to have archival value.The Author Index contains the primary entry for each item, listed under the first author's name. The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and inclusive pagination. The Subject Index contains entries describing the item under all appropriate subject headings, plus the first author's name, the publication abbreviation, month, and year, and inclusive pages. Note

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Advanced temporal analysis of anode activity during mode transitions in high current vacuum arcs

Dorraki,

Methling,

Gortschakow

2024

J. Phys. D: Appl. Phys.

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Anode activity in high current vacuum arcs leads to formation of various high current modes and transition between them. Intense material evaporation during the anode spot mode and formation of a neutral vapor cloud during anode plume mode modify the arc plasma properties and, hence, can have a crucial impact in applications, like e. g. reduction of interruption performance of switching devices. The influence of anode mode appearance on arc plasma parameters and on anode surface temperature was studied in detail by a novel optical diagnostic technique – intensified video optical emission spectroscopy. Employing advanced diagnostic methods, ground state density, excitation temperature and pressure profiles close to the anode surface have been determined. For the anode plume mode, higher copper vapour pressure was found in the plume shell comparing to its core. The copper ion density distribution shows a maximum outside of the plume shell. Consequently, a higher electrical conductivity in the surrounding area of the plume might be expected, i. e. the arc current flows around the plume rather than through it.Analysis of the temporal evolution of electrical and optical signals reveals that voltage jumps and drops during the mode transitions are accompanied by noticeable changes in anode surface temperature. Thus, the formation of anode plume leads to temperature lowering while a transition to the anode spot mode is accompanied by the temperature increase. In general, a clear correlation between electrode surface temperature and arc voltage variations in the case of stable constricted anode attachment was found.The results of the study give new insights in anode plume properties and consequences of anode mode transitions. Reversable mode transitions, correlation between arc voltage and anode surface temperature, as well as the changes and in the current path during anode plume mode, have to be considered as factors for optimisation of electrode design and choice of materials for switching applications.

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Advanced Optical Diagnostics for Characterization of Arc Plasmas

Cited by 4 publications

References 25 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

2021 Index IEEE Transactions on Plasma Science Vol. 49

Advanced temporal analysis of anode activity during mode transitions in high current vacuum arcs

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