Influence of anode-cathode gap distance on output characteristics of high-power microwave from coaxial virtual cathode oscillator

Sung, Kew Yong; Jeon, Wook; Jung, Young‐Dae; Lim, Jeong Eun; Uhm, Han S.; Choi, Eun Ha

doi:10.1109/tps.2005.852354

Cited by 21 publications

(1 citation statement)

References 12 publications

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“…Due to the simple operation of the DBD, it is widely used in ozone synthesis [2,3], sterilization [4], pollution abatement [5], air purification for environmental protection [6], UV and vacuum UV radiation generation [7], surface modification of materials [8], thin film deposition [9], light source [10], etc [11][12][13]. In most of the published papers, the effects of the applied voltage, power frequency, discharge gap distance, gas type, gas flow rate, and other parameters on discharge characteristics have been studied [14][15][16][17][18][19]. However, studies on the relationship between gas/electrode temperature and discharge characteristics have also attracted greater attention in recent years.…”

Section: Introductionmentioning

confidence: 99%

Effects of the ground-electrode temperature on electrical and optical characteristics of a coaxial dielectric barrier discharge in atmospheric pressure air

Liu,

Shi,

Wang

et al. 2023

Phys. Scr.

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The applied power and electron energy are believed to play important roles in plasma applications, which can be significantly altered by controlling the ground-electrode temperature in a coaxial dielectric barrier discharge (DBD). The effects of the ground-electrode temperature on the electrical and optical characteristics of the DBD were investigated in atmospheric pressure air. The results show that the breakdown voltage decreases, and the number of discharge pulses, the transferred charges, and the applied power increase with the electrode temperature, while the peak current tends to decrease when the electrode temperature is below −35 °C and above 25 °C, respectively. When the electrode temperature remains constant, the breakdown voltage increases and the applied power decreases with the gap distance. The applied power increases with the applied voltage. The dielectric capacitance, the total capacitance, and the gap capacitance at the electrode temperature below −35 °C are generally higher than those at the electrode temperature above 25 °C. Moreover, they change in the same trend when the electrode temperature and the applied voltage increase. The dielectric and total capacitances increase while the gap capacitance decreases. The relative intensities of the spectral lines increase with the electrode temperature. The electron, vibrational, and rotational temperatures increase with the electrode temperature above 25 °C. However, the electron and vibrational temperatures increase and decrease with the electrode temperature below −35 °C. The secondary emission coefficients and electron energy distributions with the electrode temperature were discussed.

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