Deconvolution of the spectral line profiles for the plasma temperature estimation

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• 作者：Natalja Zorina
• 关键词：Electrodeless discharge lamps ; Temperature estimation ; Instrumental function ; Deconvolution ; Tikhonov regularization
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2010
• 出版时间：11 November 2010
• 年：2010
• 卷：623
• 期：2
• 页码：763-765
• 全文大小：319 K

文摘

The Hg 253.7 nm spectral line profiles, emitted from the mercury–argon high-frequency electrodeless discharge lamps (HFEDL) have been measured by means of a high-resolution scanning Fabry–Perrot interferometer at the mercury cold spot temperature value at 20 °C, different discharge current and buffer gas values. The deconvolution procedure by means of the Tikhonov's regularization method was performed to obtain the real spectral line shape. The influence of the instrumental function and absorption, real width of the Hg 253.7 nm resonance line and temperature of the radiating atoms are obtained. The results were compared with the results of the nonlinear multiparameter mathematical modeling by means of a nonlinear multiparameter χ² fit.