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Q: Fachverband Quantenoptik und Photonik
Q 42: Ultracold atoms, ions, and BEC V (joint session A/Q)
Q 42.5: Vortrag
Donnerstag, 12. März 2020, 12:15–12:30, f303
Collinear laser spectroscopy of the 2s 3S1 ↔ 2p 3P2 transition in He-like Boron — •Konstantin Mohr1, Zoran Andelkovic2, Axel Buß3, Volker Michael Hannen3, Phillip Imgram1, Kristian König4, Jörg Krämer1, Bernhard Maaß1, Simon Rausch1, Rodolfo Sánchez2, Christian Weinheimer3, and Wilfried Nörtershäuser1 — 1IKP, TU Darmstadt — 2GSI, Darmstadt — 3IKP, WWU Münster — 4NSCL, Michigan State University
We aim for a determination of nuclear charge radii of light isotopes in an all-optical approach, i.e., without reference to elastic electron scattering. The calculations required for this approach can currently be only accomplished for hydrogen-like systems but will soon become established for He-like systems [1]. While the ground state of He-like systems is not easily accessible by laser spectroscopy, transitions starting from the metastable 3S1-state can be adressed.
The 2s 3S1 ↔ 2p 3Pj transitions of 11B3+ have already been measured with a different technique [2]. At the HITRAP-facility at the GSI accelerator complex designed to prepare heavy highly charged ions for precision spectroscopy [3] we used an Electron Beam Ion Source (EBIS) and measured the 2s 3S1 ↔ 2p 3P2 transition in 10,11B. In this contribution we report about the current status of this experiment.
[1] V. A. Yerokhin et al., Phys. Rev. A98, 032503 (2018)
[2] T. P. Dinneen et al., Pys. Rev. Lett. 66, 2859, (1991)
[3] Z. Andelkovic et al., Hyp. Int. 235, 37 (2015)
We acknowledge support from BMBF (05P19RDFAA, 05P19PMFA1) and DFG (SFB 1245).