Title :
Visualization of the Gas-Phase Emitter Effect of Dysprosium in Ceramic Metal Halide Lamps
Author :
Westermeier, Michael ; Langenscheidt, Oliver ; Reinelt, Jens ; Mentel, Juergen ; Awakowicz, Peter
Author_Institution :
Electr. Eng. & Plasma Technol., Ruhr Univ. of Bochum, Bochum
Abstract :
The gas-phase emitter effect of dysprosium is demonstrated by high-speed photography, spectroscopic, and pyrometric measurements at a high-pressure mercury lamp doped with Nal/Tll/Dyl3, which is operated in a transparent yttrium-aluminia-garnet tube with an f = 100 Hz switched dc current.
Keywords :
arcs (electric); dysprosium; mercury (metal); plasma diagnostics; Dy; Hg; ceramic metal halide lamps; frequency 100 Hz; gas-phase emitter dysprosium effect; high-pressure mercury lamp; high-speed photography; pyrometric measurements; spectroscopic measurements; transparent yttrium-aluminia-garnet tube; Ceramics; Current measurement; Electrodes; High intensity discharge lamps; Plasma temperature; Spectroscopy; Stimulated emission; Temperature measurement; Tungsten; Visualization; Arc discharges; dysprosium; electrodes; lamps; mercury; optical spectroscopy; thermionic emission; tungsten; work function;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2008.924550
