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Hannover 2013 – scientific programme

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A: Fachverband Atomphysik

A 20: Poster: Precision spectroscopy of atoms and ions (with Q)

A 20.5: Poster

Tuesday, March 19, 2013, 16:00–18:30, Empore Lichthof

Structure of highly charged ions: towards a determination of the variation of the fine-structure constant — •Natalia S. Oreshkina1, Zoltán Harman1,2, and Christoph H. Keitel11Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, Germany — 2ExtreMe Matter Institute (EMMI), Planckstrasse 1, 64291 Darmstadt, Germany

The possibility of the time-variation of the fine structure constant α, as one of the fundamental constants, has a great interest for modern science. Specifically, a varying α has been proposed as a way of solving puzzles in cosmology and astrophysics. Transitions in highly charged ions can have an extremely high sensitivity to α variation and can be observed in laboratory by high-precision spectroscopy. We present a set of ionic optical transitions which may be utilized to observe a frequency shift due to α variation.

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