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arXiv · 2609.22186

Design of a Lamb-Shift Polarimeter for $^3$He Ions and Atoms

N. Faatz·R. Engels·C. Kannis·S. J. Pütz·J. Steinhage
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Abstract

In high energy physics experiments $^3$He$^{2+}$ nucleons are suitable to test the internal structure of neutrons, which makes them the perfect substitute. Moreover, it is one of the atomic species for which high polarization values are achievable through the use of optical pumping methods. Therefore, nuclear polarized sources for $^3$He$^{2+}$ ions are currently in development. Consequently, detector systems validating their nuclear polarization value need to be established. Such a detector system, based on the Lamb-shift polarimeter, is introduced in this work. Its advantage is that it can operate at low energies in the range of 10 to 100 keV, which makes preacceleration unnecessary. In addition, a fast evaluation of the nuclear polarization within seconds leads to shorter disruptions for beam times.

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N. Faatz, R. Engels, C. Kannis, S. J. Pütz, J. Steinhage. 2026-08-28. Design of a Lamb-Shift Polarimeter for $^3$He Ions and Atoms. https://arxiv.org/abs/2609.22186

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