Stuttgart 2012 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 2: Precision Mass Spectrometry and Fundamental Applications I
MS 2.2: Vortrag
Montag, 12. März 2012, 14:30–14:45, V57.06
Double-beta transition Q-value and direct mass measurements with TRIGA-TRAP — •Christian Smorra1,2,3, Thomas Beyer1,2, Klaus Blaum1, Michael Block4, Christoph E. Düllmann2,4,5, Martin Eibach2,3, Sergey Eliseev1, Sebastian Klein2, Szilard Nagy1,4, Wilfried Nörtershäuser2,4, and Dennis Renisch1,2 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg — 2Institut für Kernchemie, Johannes Gutenberg-Universität, Fritz-Strassmann-Weg 2, D-55128 Mainz — 3Fakultät für Physik und Astronomie, Ruprecht-Karls-Universität, Philosophenweg 12, D-69120 Heidelberg — 4GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, D-64291 Darmstadt — 5Helmholtz-Institut Mainz, Johannes Gutenberg-Universität, D-55099 Mainz
Neutrinoless double-beta transitions are difficult to observe due to their long half-lives. In case of neutrinoless double-electron capture, a resonant enhancement of the decay rate by several orders of magnitude occurs if the energy levels of initial and final state are degenerate in energy. In order to search for nuclides undergoing a resonantly-enhanced double-electron capture the Q-values of the transitions in 106Cd, 108Cd, and 184Os were determined by the double-Penning trap mass spectrometer TRIGA-TRAP with a precision better than 1 keV. The double-beta decay Q-value of 110Pd was investigated as well. The recent results will be presented.