Abstract
High-precision laser spectroscopy of atomic hydrogen has led to an impressive accuracy in tests of bound-state quantum electrodynamics (QED). At the current level of accuracy many systematics have to be studied very carefully and only independent measurements provide the ultimate cross-check. This has been proven recently by measurements in muonic hydrogen, eventually leading to a significant shift of the CODATA recommended values of the proton charge radius and the Rydberg constant. We aim to contribute to tests of fundamental physics by measuring the 1S-2S transition in the He+ ion for the first time. Combined with measurements in muonic helium ions this can probe the value of the Rydberg constant, test higher-order QED terms, or set benchmarks for ab initio nuclear polarizability calculations. We extend the Ramsey-comb spectroscopy method to the XUV using high-harmonic generation in order to excite a single, trapped He+ ion.
Original language | English |
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Title of host publication | Proceedings of Science PoS (FFK2019)049 |
Publisher | arXiv.org |
Pages | 1-10 |
Number of pages | 10 |
DOIs | |
Publication status | Published - 29 Oct 2019 |
Event | 2019 International Conference on Precision Physics and Fundamental Physical Constants, FFK 2019 - Tihany, Hungary Duration: 9 Jun 2019 → 14 Jun 2019 |
Conference
Conference | 2019 International Conference on Precision Physics and Fundamental Physical Constants, FFK 2019 |
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Country/Territory | Hungary |
City | Tihany |
Period | 9/06/19 → 14/06/19 |