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A: Fachverband Atomphysik
A 15: Precision spectroscopy of atoms and ions II
A 15.2: Vortrag
Mittwoch, 11. März 2020, 11:30–11:45, f107
A New Experiment for the Measurements of the Nuclear Magnetic Moment of 3He2+ and the Ground-State Hyperfine Splitting of 3He+ — •Marius Müller1, 2, Stefan Dickopf1, 2, Andreas Mooser1, Antonia Schneider1, Tom Segal1, Stefan Ulmer3, Jochen Walz4, 5, and Klaus Blaum1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Ruprecht-Karls-Universität, Heidelberg, Germany — 3RIKEN, Ulmer Fundamental Symmetries Laboratory, Wako, Japan — 4Johannes Gutenberg-Universität, Mainz, Germany — 5Helmholtz-Institut Mainz, Germany
The Heidelberg 3He-experiment is aiming at the first direct high-precision measurement of the nuclear magnetic moment of 3He2+ with a relative uncertainty on the 10−9 level and an improved measurement of the ground-state hyperfine splitting of 3He+ by at least one order of magnitude. The helion nuclear magnetic moment is an important parameter for the development of hyperpolarized 3He-NMR-probes for absolute magnetometry. The HFS measurement of 3He+ is sensitive to nuclear structure effects and would give information about such effects in a three-nucleon system. For both measurements a four Penning trap setup was designed and similar techniques as already demonstrated in proton and antiproton magnetic moment measurements [1,2] are going to be applied. The current status of the experiment is presented.
[1] Schneider et al., Science Vol 358, 1081 (2017)
[2] Smorra et al., Nature, Vol 550, 371 (2017)