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C_2 Swan spectrum used as a molecular pyrometer in transferred arc and the influence noise to signal ratio on the temperature values

机译:C_2天鹅谱用作转移电弧的分子高温仪,对温度值的信号比的影响噪声

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The C_2 Swan system molecular emission spectrum is frequently observed in arc plasmas containing hydrocarbons. The spectra emitted from 5 kw in the transferred arc reactor at atmospheric pressure by CH4/CO_2/Ar mixture are recorded with the help of an optical system consisting of a linear CCD array coupled with 2m spectrometer. The rotational temperature of 4300±300K is found from the experimental Abel inverted spectra in the arc center after a point- to-point comparison of the spectrum with a computer simulated one. The influence of the noise to signal ratio has been studied, if the noise to signal ratio is about 10% we found an error of 7% at temperature 3000K and 10% at 6000K.
机译:在含有烃的弧度等离子体中经常观察到C_2 SWAN系统分子发射光谱。借助于由与2M光谱仪组成的线性CCD阵列组成的光学系统,记录从转移的电弧反应器中的5kW中的5kw中的光谱。在弧形中心的实验Abel倒光谱中,在与计算机模拟一体的光谱的点对点比较之后,从弧形中心的实验Abel倒光谱中发现了4300±300k的旋转温度。已经研究了噪声对信号比的影响,如果对信号比的噪声约为10%,我们发现在温度3000k温度下7%和6000k的误差。

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