首页|OES diagnostics of non-stationary electric arc/jet plasmas having no axial symmetry
OES diagnostics of non-stationary electric arc/jet plasmas having no axial symmetry
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
The paper presents the results of a technique developed for OES measurements of plasma local parameters of electric arcs and jets， when they are non-stationary and can not be accounted for using a common approximation of the axial symmetry。 The technique uses physical "a priory" data， and it is based upon a plane symmetry approach to the plasmas under consideration。 Rather simple equations are derived allwoing to analyze the influence of the plasma temeprature fluctuations on the measured intensities of spectral lines emitted by the arc/jet plasmas and thus on temperature measurement results。 Some important conclusions are made concerning the relations between measured intensities， local plasma temeprature values and the temperature fluctuatios。 Among them， a technique is proposed to measure at a time maximum temeprature along a line of sight and its dispersion value using an intensity ratio of three atomic spectral lines， emitted by unstable arcs/jets， when fluctuations of the plasma parameters are stochastic ones。 For the case of sinusoidal pulsations of the plasma parameters， it is found that a ratio of the measured mean intensity values of spectral lines gives the plasma maximum temperature along the line of sight during the observation time。
plasmatemepraturelocal measurementfluctuationOES
E.Ershov-Pavlov
展开 >
International thermal plasma processing conference
NETL
