Mainz 2017 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 7: Poster

MS 7.1: Poster

Mittwoch, 8. März 2017, 17:00–19:00, P OG1

Towards a Mass Measurement of Helium-3 at THe-Trap — •Tom Segal, Martin Höcker, Jochen Ketter, Marc Schuh, Sebastian Streubel, and Klaus Blaum — Max-Planck-Institut für Kernphysik

THe-Trap is a precision Penning-trap mass spectrometer[1] at the Max-Planck-Institute für Kernphysik (MPIK) in Heidelberg. It aims to settle the 4-sigma discrepancy in the mass measurements of helium-3[2,3] by measuring its mass with a relative uncertainty of about 100ppt. If left unresolved, the discrepancy will cause an increase in the uncertainties of the hydrogen and deuterium masses, as well as in the values of physical constants such as h, e, k and Avogadro's constant. In the talk the current status of the experiment will be presented as well as ideas for future developments.

[1] S.Streubel et al., Applied Physics B: Lasers and Optics (2014), 114(1-2), 137-145. [2] R.S.Van Dyck et al., Metrologia (2015), Volume 52, Number 2. [3] E.G. Meyers et al., Phys. Rev. Lett (2015), 144,013003.