Determination of Concentrations via the Diminution of Doppler Shifts by Radiation Trapping
نویسندگان
چکیده
Under typical discharge conditions, atoms or molecules excited by electrons have a unique velocity component along the plasma electric field direction. This component results in Doppler shifts that can be observed and measured by a high resolution Fourier transform spectrometer. We show theoretically that if the upper state of a given transition suffers radiation trapping, its Doppler shift will be reduced by a factor dependent upon the average number of trapping cycles
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