Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 59: Struktur und Dynamik von Kernen

HK 59.3: Vortrag

Freitag, 23. März 2012, 11:45–12:00, P 4

Double-beta transition Q-value and direct mass measurements with TRIGA-TRAP — •Christian Smorra — Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg — Institut für Kernchemie, Johannes Gutenberg-Universität, Fritz-Strassmann-Weg 2, D-55128 Mainz — Fakultät für Physik und Astronomie, Ruprecht-Karls-Universität, Philosophenweg 12, D-69120 Heidelberg

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.