首页> 外文会议>International conference on phenomena in ionized gases;ICPIG 2007 >Atomic Oxygen Density in the Effluent of an RF-Excited Atmospheric Pressure Plasma Jet: Measurements, Modelling, Mechanisms
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Atomic Oxygen Density in the Effluent of an RF-Excited Atmospheric Pressure Plasma Jet: Measurements, Modelling, Mechanisms

机译:射频激发的大气压等离子射流流出物中的原子氧密度:测量,建模,机理

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In this work a plane-parallel 13.56 MHz RF-excited atmospheric pressure plasma jet (APPJ)operated with 2 m3/h helium feed gas containing 0.5 % molecular oxygen is investigated. Theeffluent leaving the discharge through the jet's nozzle contains very few charged particles and ahigh oxygen radical density in the order of 1016 cm-3. Space resolved ground state atomic oxygendensity in the effluent is measured with two-photon absorption laser induced fluorescence(TALIF) spectroscopy. In order to understand the underlying mechanisms of atomic oxygenproduction and annihilation in the effluent, the measured atomic oxygen density is compared withchemical model calculations. Model calculations from earlier investigations by Jeong et al. [1] arerefined by taking into account the actual gas temperature distribution in the effluent of the jet.
机译:在这项工作中,研究了平面平行的13.56 MHz射频激发大气压等离子体射流(APPJ),该射流与含0.5%分子氧的2 m3 / h氦气进料气一起工作。通过喷嘴离开排放物的废水中带电粒子很少,并且氧自由基密度很高,约为1016 cm-3。用两光子吸收激光诱导荧光(TALIF)光谱仪测量流出物中的空间分辨基态原子氧密度。为了了解废水中原子氧产生和an灭的潜在机理,将测得的原子氧密度与化学模型计算进行了比较。 Jeong等人先前的研究得出的模型计算结果。 [1]通过考虑射流流出物中的实际气体温度分布来完善。

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