碩士生: 陳峙庭
畢業年月: 2017年6月
論文名稱: 微波誘發電漿對於火焰電漿之影響 / The Effect of Microwave-induced Plasma on a Flame Plasma
中文摘要:
本論文探討在一大氣壓下，以浮動電極於微波共振腔中誘發放電電漿，對火焰電漿物化性質的影響。微波功率增至200 W時，電極針尖出現尖端放電。朗謬爾雙探針量測顯示，針尖附近的電子溫度提高逾350%、電漿密度增加逾400%；放電後亦出現直流電場，使離子濃度分布略為扭曲，且微波加速電子的有效範圍受到空間限制。搭配放射光譜結果，可說明微波強化火焰速度與穩焰應用的機制。
英文摘要:
A microwave resonator with a floating electrode is used to initiate an additional plasma and to examine its effect on an atmospheric-pressure flame plasma. Corona discharge appears at 200 W of microwave power. Double Langmuir probe measurements show the electron temperature near the electrode tip rising by over 350% and the plasma density by over 400%. A DC field also appears after discharge and slightly bends the ion density distribution, and axial probe scans show that the region of microwave-driven electron acceleration is spatially limited. Combined with optical emission spectroscopy, the results help explain the mechanism behind enhanced flame speed and its use in flame stabilization.
