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MS: Fachverband Massenspektrometrie
MS 1: Precision Mass Spectrometry 1
MS 1.3: Talk
Monday, March 5, 2018, 11:15–11:30, R 1.020
Precision Measurements of Neon Isotopes 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-Institut für Kernphysik (MPIK) in Heidelberg.
It aims to solve the 4-σ discrepancy in the mass measurements of helium-3 [2,3] by measuring its mass with a relative uncertainty of about 10−10.
Left unresolved, the discrepancy increases the uncertainties of the hydrogen and deuterium masses, as well as the values of physical constants such as h, kB and NA.
A new gas injection system was developed in preparation for the helium measurement. To test it, neon gas was successfully injected into the traps region and ionized by a field emission point.
The produced ions were trapped and their cyclotron frequency measured.
The measurement process will be presented, as well as preliminary mass results for 20Ne, 22Ne and future plans.
[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