Kiel 2004 – wissenschaftliches Programm
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P: Plasmaphysik
P 17: Postersitzung: Plasma-Wand-Wechselwirkung III, Grundlegende Probleme Theorie II, Schwerionen- Laserplasmen II, Dichte Plasmen II
P 17.14: Poster
Mittwoch, 10. März 2004, 17:45–19:30, Foyer
EUV spectra of light elements — •Željko Andreić1, Hans-Joachim Kunze2 und Ante Hečimović3 — 1Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pijerottijeva 6, 10 000 Zagreb, Croatia — 2Institute of Experimental Physics V, Ruhr-University, 44780 Bochum, Germany — 3Faculty of Science, University of Zagreb, Bijenička 32, 10000 Zagreb, Croatia
Spectra of laser-produced plasmas of light elements (Be-Al) were systematically obtained with the help of a flat-field spectrograph built around a Hitachi 1200 l/mm grating. The primary detector was a gated MCP whose output plane was imaged onto a CCD camera. The whole spectral range of the instrument was covered and individal spectra were assembled together. In experiments the experimental parmeters were kept the same. In the case of gaseous elements (N, O, F) their simplest solid compounds were used as ablation targets. The goal is to obtain single element spectra that cover the whole spectral range of the instrument in question (i. e. approximately 3-30nm. For each element the instrumental spectrum and the "true" spectrum, cleaned of higher order spectral lines will be assembled and made available on our web site. Such spectra can be used to simplify wavelength calibration of XUV instruments built arround the same or a simmilar gratings, and line identification in this spectral range. Work is still in progres, but the first results (complete spectra of several elements) are available and will be presented.
This work is suported by the Croatian Ministry of Science and Technology (research grant no. 0195052), and by the Alexander von Humboldt Foundation.