Mathematical modelling of the spectral line profiles in the high-frequencydischarge

The paper is devoted to an estimation of the true profiles of spectral line s and equipment influence based on complex experimental line shape profiles in high-frequency discharge by means of a non-linear multiparameter chi-sq uare fit. The self-absorption and energy transfer effects are taken into co nsideration. A good agreement with interferometric data from Hg and Hg-Cd h igh-frequency electrodeless lamps of both natural and isotopic abundance ar e achieved. The temperature of radiating atoms and the optical density for several lines are obtained as a function of the high-frequency oscillator w orking regime. The confidence regions, standard deviations and correlations of parameters are obtained using statistical modelling. (C) 1999 Elsevier Science Ltd. All rights reserved.