Simulation of the contours of spectral lines of closed-ARC radiation

被引:0
|
作者
A. D. Khakhaev
L. A. Luizova
A. V. Patroev
机构
关键词
discharge; arc; contour of a line; self-reversal; simulation; absorption; population of levels;
D O I
10.1007/BF02679849
中图分类号
学科分类号
摘要
Simulated contours of self-reversed lines of Tl at 535 nm (72S1/2−62P3/2) and 378 nm (72S1/2-62P1/2) in alternating-current closed-arc radiation in mercury vapor with an addition of Tll were compared with experimental contours. It is shown that while a single self-reversed contour has many different sets of model parameters that ensure coincidence of experimental and calculated profiles, in the case of operation with a large data file of contours that correspond to different directions of observation along chords perpendicular to the discharge axis, and with different lines that have a common level, such a set of parameters becomes virtually unique. Instantaneous spatial distributions of Hg and Tl atoms in the ground state and of Tl atoms in the 62P3/2 state are determined and the parameters of the van der Waals broadening of the 72S1/2 level are found. It is shown that a considerable “red” shift of absorption contours in the outer layers of the discharge is observed. The results obtained contradict the presumed existence of local thermodynamic equilibrium in the given discharge.
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页码:796 / 803
页数:7
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