Frankfurt 2006 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
A: Atomphysik
A 8: Poster I: Pr
äzisionsspektroskopie
A 8.1: Poster
Dienstag, 14. März 2006, 16:30–18:30, Labsaal
Experimental and theoretical wavelength of EUV emission lines from highly charged xenon ions — •Christoph Biedermann1, Rainer Radtke1, Jean-Louis Schwob2, and Pinhas Mandelbaum2 — 1Institut für Physik der Humboldt-Universität, Lehrstuhl Plasmaphysik, Newtonstraße 15, 12489 Berlin und Max-Planck-Institut für Plasmaphysik, EURATOM Association, Germany — 2Racah Institute of Physics, The Hebrew University, 91904
In the effort to support fusion work with atomic physics data at the Berlin electron beam ion trap (EBIT), we investigate the line radiation from highly charged xenon ions. Xenon has been proposed as a coolant of the plasma edge region of future large tokamaks, such as the International Thermonuclear Experimental Reactor (ITER). To estimate the radiated power, it is important to obtain information on the ionization state and the transitions producing line emission. With EBIT a narrow range of ion charge states can be selectively produced, stored for extended periods of time and excited by the electron beam. The EUV emission lines have been measured with high resolution over a wide wavelength range from 50 to 800 Å. We observe and identify lines or groups of lines for individual ion charge states ranging from Tc-like Xenon (11+) to Li-like xenon (51+). The data is compared with theoretical calculations using the multiconfiguration relativistic HULLAC computer code (helping to classify the observed lines) as well as measurements at the TFR-tokamak and the W7-AS stellerator.