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Quartz resonators for penning traps toward mass spectrometry on the heaviest ions

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Nagy,  S.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Citation

Lohse, S., Berrocal, J., Böhland, S., van de Laar, J., Block, M., Chenmarev, S., et al. (2020). Quartz resonators for penning traps toward mass spectrometry on the heaviest ions. Review of Scientific Instruments, 91: 093202. doi:10.1063/5.0015011.


Cite as: http://hdl.handle.net/21.11116/0000-0007-7355-8
Abstract
We report on cyclotron frequency measurements on trapped 206,207Pb+ ions by means of the non-destructive Fourier-transform ion-cyclotron-resonance technique at room temperature. In a proof-of-principle experiment using a quartz crystal instead of a coil as a resonator, we have alternately carried out cyclotron frequency measurements for 206Pb+ and 207Pb+ with the sideband coupling method to obtain 21 cyclotron-frequency ratios with a statistical uncertainty of 6 × 10−7. The mean frequency ratio R¯ deviates by about 2σ from the value deduced from the masses reported in the latest Atomic Mass Evaluation. We anticipate that this shift is due to the ion–ion interaction between the simultaneously trapped ions (≈100) and will decrease to a negligible level once we reach single-ion sensitivity. The compactness of such a crystal makes this approach promising for direct Penning-trap mass measurements on heavy and superheavy elements.