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Initial tests from the Freiburg electron beam ion trap are reported. Highly charged ions of xenon, barium, tungsten and krypton have been observed with charge states up to 60+ by means of X-ray spectroscopy. The current status, upgrade and future experiments are outlined.
After the commissioning of the Freiburg electron beam ion trap, experiments on dielectronic recombination of the low-lying resonances in He-like Ar16+ have been carried out at high resolution. Forbidden transitions (“coronal lines”) of highly charged argon ions in the optical range have been measured with an accuracy around 1 ppm. Ions extracted from FreEBIT have been used to perform collision experiments...
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