Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 37: Hauptvorträge II

HK 37.2: Hauptvortrag

Donnerstag, 30. März 2017, 09:10–09:50, F 1

Precision Nuclear Mass Measurements for Neutrino Physics Studies — •Sergey Eliseev — MPIK, Heidelberg, Germany

This contribution will give a brief overview of the extended and diverse experimental campaign carried out with the Penning-trap mass spectrometer SHIPTRAP for neutrino physics and present a physical program for the next generation Penning-trap mass spectrometer PENTATRAP. The contribution is structured as follows: First, the results of our search for the nuclide with the largest probability for neutrinoless double-electron capture are summarized. The Q-values of a large number of potentially suitable nuclides have been determined with SHIPTRAP, which has resulted in the discovering of two resonantly enhanced transitions in 152Gd and 156Dy. Second, the Q-values of the beta decay in 187Re and electron capture in 163Ho - ones of the most suitable processes for the determination of the neutrino mass - have been determined with an uncertainty of about 30 eV, which is a significant contribution to the development of the ECHo project. Finally, the novel Penning trap mass spectrometer PENTATRAP is introduced and a future measurement program is presented.