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Hannover 2013 – wissenschaftliches Programm

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SYMS: Symposium 100 Years of Mass Spectrometry

SYMS 1: 100 Years of Mass Spectrometry 1

SYMS 1.4: Hauptvortrag

Freitag, 22. März 2013, 12:30–13:00, E 415

Storage ring mass and lifetime measurements — •Fritz Bosch — GSI Helmholtzzentrum, Darmstadt, Germany

The Experimental Storage Ring ESR provided the first opportunity for addressing precision masurements of masses and beta-decay characteristics of stored and cooled unstable highly-charged ions. This talk will focus on the first observations of the orbital electron-capture decay of H-like and He-like ions in well-defined quantum states. The ESR is for this purpose a unique tool, since the only, but unambiguous signature for these two-body decays is a sudden tiny jump of the revolution frequency. If only a few parent ions are injected and subsequently cooled, this extremely small change of the revolution frequency can be observed and clearly resolved. The first results of this "single-ion decay spectroscopy" will be reported and discussed.

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