Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 17: Poster III
A 17.11: Poster
Dienstag, 12. März 2024, 17:00–19:00, Tent C
Towards laser spectroscopy of molecular hydrogen ions in Alphatrap — •K. Singh1, A. Kulangara Thottungal George1, C. M. König1, I. V. Kortunov2, J. Morgner1, T. Sailer1, V. Vogt2, M. Bohman1, F. Heisse1, B. Tu1, K. Blaum1, S. Schiller2, and S. Sturm1 — 1Max-Planck-Institut für Kernphysik, 69117 Heidelberg — 2Institut für Experimentalphysik, Universität Düsseldorf, 40225 Düsseldorf
Optical spectroscopy on trapped molecular hydrogen ions (MHI), e.g. HD + and H2+, is one of the most sensitive techniques to probe fundamental physics and to extract fundamental constant such as mp/me, perform tests on Quantum Electrodynamics and look for beyond standard model physics [1].
At Alphatrap [2], we can trap single ions for months in our cryogenic Penning trap. Using sensitive image current detection method and the continuous Stern-Gerlach effect [3], we have recently performed millimeter-wave spectroscopy on the molecular hyperfine structure of HD+ and we plan to perform optical spectroscopy of the rovibrational structure in HD+ and H2+. The techniques developed here are suitable to be directly applied to the antihydrogen molecular ion H2− in the future for stringent CPT tests [4]. We will present an overview of the trap and future plans for the laser spectroscopy of MHI at Alphatrap.
[1] S. Schiller, Contemporary Physics 63 (4), 247-279 (2022)
[2] S. Sturm et al., Eur. Phys. J. Spec. Top. 227, 1425-1491 (2019)
[3] H. Dehmelt, Proc. Natl. Acad. Sci. USA 83, 2291 (1986)
[4] E. Myers, Phys. Rev. A 98, 010101(R) (2018)