Abstract
The Berlin EBIT has been established by the Max‐Planck‐Institut fur Plasmaphysik to generate atomic physics data in support of research in the field of controlled nuclear fusion, by measuring the radiation from highly charged ions in the x‐ray, extreme ultraviolet and visible spectral ranges and providing valuable diagnostics for high temperature plasmas [1]. In future fusion devices, for example ITER, currently being constructed at Cadarache, France, the plasma facing components will be armored with high‐Z materials, most likely tungsten, due to the favorable properties of this element [2]. At the same time the tremendous radiation cooling of these high‐Z materials represents a threat to fusion and obliges one to monitor carefully the radiation. With EBIT a selected ensemble of ions in specific charge states can be produced, stored and excited for spectroscopic investigations. Employing this technique, we have for example resolved the wide structure observed around 5 nm at the ASDEX Upgrade tokamak as or...
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