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Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 56: Poster - Struktur und Dynamik von Kernen

HK 56.5: Poster

Wednesday, March 6, 2013, 16:45–19:00, HSZ 4.OG

Precision mass measurements of exotic calcium isotopes using ISOLTRAP’s multi-reflection time-of-flight mass spectrometer — •Frank Wienholtz — Ernst-Moritz-Arndt-Universität, Institut für Physik, 17487 Greifswald, Germany

State-of-the-art precision measurements on radioactive ions have been performed with the Penning-trap mass spectrometer ISOLTRAP at CERN. Minute production rates often accompanied by huge isobaric background and millisecond half-lives pose enormous challenges on the experimental setup and often require new experimental techniques. The ISOLTRAP setup has recently been enhanced with an electrostatic mirror ion trap acting as a multi-reflection time-of-flight mass separator (MR-ToF MS) for beam purification. It can likewise be used as a spectrometer in combination with a suitable detector increasing the mass-measurement capability of ISOLTRAP considerably. The measurements on the calcium isotopic chain will be presented together with the nuclear structure they reveal. The measurements up to 54Ca are compared with predictions from models that utilize three-body nuclear forces.

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