ISOLDE Seminar

Mass measurements of exotic Calcium isotopes using ISOLTRAP’s multi-reflection time-of-flight (MR-ToF) mass spectrometer

by Frank Wienholtz (Ernst-Moritz-Arndt-Universität, Institut für Physik, 17487 Greifswald, Germany,)

Thursday, 4 July 2013 from to (Europe/Zurich)
at CERN ( 26-1-022 )
Description
State-of-the-art precision measurements on radioactive ions have been performed with the Penning-trap mass spectrometer ISOLTRAP at CERN. Minute production rates 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 trap acting as a multi-reflection time-of-flight (MR-ToF) mass separator 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, where we find an excellent agreement