Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 66: Struktur und Dynamik von Kernen XI

HK 66.1: Gruppenbericht

Freitag, 19. März 2010, 14:00–14:30, HG V

Recent Results of Mass Measurements at the Experimental Storage Ring at GSI — •Ronja Knöbel — GSI, Darmstadt, Germany

The combination of the fragment separator FRS and the cooler-storage ring ESR is used to perform high accuracy mass and lifetime measurements of exotic nuclei at GSI. The Schottky Mass Spectrometry gives the opportunity to measure masses down to half-lives in the second-range. For shorter-lived isotopes Isochronous Mass Spectrometry is applied.
In this talk the progress in these techniques will be shown and recent results on mass measurements of exotic nuclei produced in fission and fragmentation processes of uranium will be presented, which led, besides the mass measurements of several isotopes for the first time, to the discovery of new isotopes and isomers and yielded new information on nuclear structure aspects, e.g. pairing and nucleon separation energies, shell evolution, and proton-neutron interactions. A comparison to theoretical predictions will be given. Future aspects and developments for upcoming measurements at the current facility at GSI and the future facility FAIR will be discussed.

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