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The Analysis of Light Emissions on Ar DC Glow Discharge under the Atmosphere Pressure

대기압 Ar 직류 글로우 방전에서 인가전압의 파형특성에 따른 광원효율 분석

  • SO, Soon-Youl (Dept. of Electrical and Control Engineering, Mokpo National University)
  • Received : 2019.09.05
  • Accepted : 2019.09.24
  • Published : 2019.09.30

Abstract

We developed a one-dimensional Ar fluid model running in DC-type applied voltage with a sine and a pulse waveform at the atmosphere pressure. We investigated the light emissions and efficiencies of ${\lambda}_{128nm}$, ${\lambda}_{727nm}$, ${\lambda}_{912nm}$ and ${\lambda}_{966nm}$ from the Ar excited particles. From the results, the light emission of ${\lambda}_{128nm}$ and ${\lambda}_{727nm}$ in the applied voltage with a sine waveform were almost two times as in DC voltage type. The shorter the switching time of applied voltage was, the more the light emissions of ${\lambda}_{128nm}$ and ${\lambda}_{727nm}$ were. We discussed the power consumption and Joule heating by charged particles.

대기압에서의 Ar 직류 글로우방전 현상을 1차원 유체모델을 통하여 시뮬레이션을 수행하였다. Ar 기체방전의 여기입자들로부터 방출되는 광원으로서 4가지(${\lambda}_{128nm}$, ${\lambda}_{727nm}$, ${\lambda}_{912nm}$ 그리고 ${\lambda}_{966nm}$) 파장의 빛을 검토하였다. 그 결과, 사인형태의 전원 전압을 인가하였을 경우, ${\lambda}_{128nm}$${\lambda}_{727nm}$의 광원이 직류 전압파형을 인가하였을 때보다 거의 2배에 가까운 빛을 방출하는 것을 확인하였다. 또한, 전원전압의 스위칭 시간이 짧을수록, ${\lambda}_{128nm}$${\lambda}_{727nm}$의 방출이 더 많아지는 것을 알 수 있었다. 본 연구에서는 하전입자에 의한 줄 열과 소모 전력에 관해서도 논의하였다.

Keywords

References

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