SAMOP 2023 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 9: Penning traps, highest precision, neutrino physics, storage rings, new facilities and approaches
MS 9.3: Vortrag
Freitag, 10. März 2023, 15:15–15:30, F128
Towards a Parts-per-trillion Atomic Mass Measurement of the 3He Nucleus — •Olesia Bezrodnova1, Sangeetha Sasidharan1,2, Sascha Rau1, Wolfgang Quint2, Sven Sturm1, and Klaus Blaum1 — 1Max Planck Institute for Nuclear Physics, Heidelberg, Germany — 2GSI Helmholtzzentrum, Darmstadt, Germany
Masses of light nuclei provide a network of essential parameters used for the fundamental nature description. For example, the mass difference of T and 3He is used as a consistency check for the model of systematics in the KATRIN experiment, aiming to set a limit on the νe mass [1].
The most precise mass measurements of the lightest nuclei, including 3He, revealed considerable inconsistencies between the values reported by different experiments [2]. In order to provide an independent cross-check, the multi-Penning-trap mass spectrometer LIONTRAP has obtained the masses of the proton [3], the deuteron and the HD+ molecular ion [4].
Present activities of the experiment are directed at the atomic mass measurement of the 3He nucleus with a relative uncertainty lower than 10 ppt. This contribution presents the status of the ongoing measurement campaign.
[1] M. Aker et al., Nat. Phys. 18, 160-166 (2022)
[2] S. Hamzeloui et al., Phys. Rev. A 96, 060501(R) (2017)
[3] F. Heiße et al., Phys. Rev. A 100, 022518 (2019)
[4] S. Rau et al., Nature 585, 43-47 (2020)