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Heidelberg 2015 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 66: Structure and Dynamics of Nuclei 13

HK 66.7: Talk

Thursday, March 26, 2015, 18:30–18:45, T/SR19

Recent results from the Penning-trap mass spectrometer ISOLTRAP — •Dinko Atanasov for the ISOLTRAP collaboration — Max-Planck Institute for Nuclear Physics, Heidelberg, Germany — IMPRS-PTFS, Heidelberg, Germany

ISOLTRAP is an experiment dedicated to precision Penning-trap mass measurements of radioactive nuclides produced by the ISOLDE facility at CERN. In this contribution we will present the results of recent ISOLTRAP measurements performed after the restart of the physics program at ISOLDE in 2014. The unique combination of four traps allowed the study of the neutron-rich 129−131Cd isotopes. Their masses are of great importance to model the astrophysical r-process, as the 130Cd isotope is a major waiting point isotope. Furthermore, ISOLTRAP assisted in measuring the hyperfine structure of astatine isotopes in an ongoing in-source laser spectroscopy program. From the hyperfine structure, charge radii and electromagnetic moments can be extracted. Additionally, the nuclear masses of 101,102Sr and 101,102Rb were determined, extending further the investigations of the A ≈ 100 nuclides in the shape transition region.

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