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Electrical features of radio-frequency atmospheric pressure helium discharge with and without dielectric electrodes
摘要： In this paper, a comparative study of radio-frequency atmospheric pressure glow discharge (rf APGD) generated in helium with and without dielectric electrodes to investigate the effect of electrodes insulation on electrical features of APGD, is presented. In α mode both the rf APGDs remain volumetric, stable and uniform. In γ mode the APGD without dielectric electrodes shrinks into a constricted plasma column whereas APGD with dielectric electrodes remains stable and retains the same volume without plasma constriction even at higher densities of discharge current. A comparison of electrical features of both rf APGDs in normal and abnormal glow discharge regimes is presented. In both APGDs with and without dielectric electrodes, impedance measurements have been performed and compared with equivalent circuit models. The measured impedance data is found to be in good agreement with simulated data.
关键词： dielectric electrodes,radio-frequency atmospheric pressure glow discharge,plasma stability control
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - PolySi Based Passivating Contacts Enabling Industrial Silicon Solar Cell Efficiencies up to 24%
摘要： An RF argon plasma jet has been explored using high-speed camera imaging at 10 000 frames/s. Small variations of gas ?ow and/or RF power lead to instabilities of the ?lament movement. Two types of instabilities have been observed depending on the interrelated azimuthal velocities of ?laments. In the case of antiparallel ?lament velocities, one ?lament is collapsing and fuses with the other ?lament, while the collapsing ?lament exhibits a striated structure. In the case of parallel velocities, both ?laments establish a symmetric con?guration and rotate with constant velocity in the jet. Spatially and temporally resolved features are visualized with a time-colored stroboscopic image.
关键词： plasma stability,plasma materials processing,Image processing
更新于2025-09-23 15:19:57
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[IEEE 2019 IEEE Pulsed Power & Plasma Science (PPPS) - Orlando, FL, USA (2019.6.23-2019.6.29)] 2019 IEEE Pulsed Power & Plasma Science (PPPS) - Electro-Optical Measurement of Electric Fields for Pulsed Power Systems
摘要： An RF argon plasma jet has been explored using high-speed camera imaging at 10 000 frames/s. Small variations of gas ?ow and/or RF power lead to instabilities of the ?lament movement. Two types of instabilities have been observed depending on the interrelated azimuthal velocities of ?laments. In the case of antiparallel ?lament velocities, one ?lament is collapsing and fuses with the other ?lament, while the collapsing ?lament exhibits a striated structure. In the case of parallel velocities, both ?laments establish a symmetric con?guration and rotate with constant velocity in the jet. Spatially and temporally resolved features are visualized with a time-colored stroboscopic image.
关键词： plasma stability,Image processing,plasma materials processing
更新于2025-09-19 17:13:59
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Optimal Cleaning Scheduling for Photovoltaic Systems in the Field Based on Electricity Generation and Dust Deposition Forecasting
摘要： An RF argon plasma jet has been explored using high-speed camera imaging at 10 000 frames/s. Small variations of gas ?ow and/or RF power lead to instabilities of the ?lament movement. Two types of instabilities have been observed depending on the interrelated azimuthal velocities of ?laments. In the case of antiparallel ?lament velocities, one ?lament is collapsing and fuses with the other ?lament, while the collapsing ?lament exhibits a striated structure. In the case of parallel velocities, both ?laments establish a symmetric con?guration and rotate with constant velocity in the jet. Spatially and temporally resolved features are visualized with a time-colored stroboscopic image.
关键词： plasma materials processing,plasma stability,Image processing
更新于2025-09-19 17:13:59
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[IEEE IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium - Yokohama, Japan (2019.7.28-2019.8.2)] IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium - First Results from Laser-Based Spectral Characterization of Landsat 9 Operational Land Imager-2
摘要： An RF argon plasma jet has been explored using high-speed camera imaging at 10 000 frames/s. Small variations of gas ?ow and/or RF power lead to instabilities of the ?lament movement. Two types of instabilities have been observed depending on the interrelated azimuthal velocities of ?laments. In the case of antiparallel ?lament velocities, one ?lament is collapsing and fuses with the other ?lament, while the collapsing ?lament exhibits a striated structure. In the case of parallel velocities, both ?laments establish a symmetric con?guration and rotate with constant velocity in the jet. Spatially and temporally resolved features are visualized with a time-colored stroboscopic image.
关键词： plasma stability,Image processing,plasma materials processing
更新于2025-09-16 10:30:52