Berlin 2005 – wissenschaftliches Programm

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P: Plasmaphysik

P 2: Niedertemperaturplasmen / Plasmatechnologie 1

P 2.2: Vortrag

Freitag, 4. März 2005, 11:30–11:45, HU 3038

Study of the Hg line at 185 nm during the warm-up of a high-pressure discharge lamp — •St. Franke, H. Lange, H. Schneidenbach, and H. Schöpp — INP Greifswald, F.-L.-Jahn-Str. 19, D-17489 Greifswald, Germany

The mercury line at 185 nm is of essential importance for the energy balance of high-pressure discharge lamps. Therefore it is necessary to be able to model this line in a correct way using realistic broadening constants. With a VUV-spectrometer the mercury line was measured using a discharge tube made of UV-transmitting quartz. The observed intensities were corrected with respect to the absorption of UV-light by the quartz wall. Looking at the warm-up phase of the high-pressure discharge the establishment of the self-reversion can be observed and contributions to the spectrum around the Hg 185 nm line can be discussed. Taking broadening constants from the literature the validity of these constants is checked by model calculations of the radiation transport.