Mainz 2017 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 14: Highly Charged Ions
A 14.2: Vortrag
Dienstag, 7. März 2017, 14:45–15:00, HS 20
Status of the Penning-trap mass spectrometer PENTATRAP — •Alexander Rischka1, José Ramón Crespo López-Urrutia1, Sergey Eliseev1, Pavel Filianin1, Yuri Novikov2, Rima Schüssler1, Christoph Schweiger1, Sven Sturm1, Stefan Ulmer3, and Klaus Blaum1 — 1Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany — 2Petersburg Nuclear Physics Institute,188300 Gatchina, Russia — 3RIKEN, Ulmer Initiative Research Unit, Japan
The Penning-trap mass spectrometer PENTATRAP is currently in the commissioning phase at the Max-Planck-Institute for Nuclear Physics in Heidelberg. We are aiming at measurements of mass ratios using highly charged ions with a relative uncertainty of better than 10−11. This allows, among others, contributions to neutrino physics research by a sub-eV measurement of the Q-value of the electron capture in 163Ho. Furthermore, for a precession test of the energy-mass equivalence E=mc2 and thus of special relativity, the mass difference of 35Cl and 36Cl and the sum of energies of the gamma-rays emitted after the neutron capture in 35Cl are needed. The former will be measured at PENTATRAP and the latter - at ILL. To reach trapping times of weeks for highly charged ions and to perform a full characterization of the Penning-trap system in order to start first precision measurements, a major revision of the cryogenic setup and the ion transfer beamline is presently prepared and will be commissioned soon.