Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 65: Precision spectroscopy of atoms and ions III (with A)
Q 65.3: Vortrag
Freitag, 4. März 2016, 11:30–11:45, f428
Precision isotope shift measurements of calcium ions using photon recoil spectroscopy — Florian Gebert1, Yong Wan1, Fabian Wolf1, Jan-Christophe Heip1, •Chunyan Shi1, Christian Gorges2, Simon Kaufmann2, Wilfried Nörtershäuser2, and Piet O. Schmidt1,3 — 1QUEST Institut, PTB, Braunschweig, Germany — 2Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany — 3Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
In photon recoil spectroscopy (PRS), recoil kicks from photon absorption near a dipole-allowed transition in a single trapped ion are detected via motional coupling to a co-trapped cooling ion [1].
We present isotope shift measurements of the 2S1/2→2P1/2 (D1 line), 2D3/2→ 2P1/2 (non-closed transition) [2] and 2S1/2→2P3/2 (D2 line) transitions in the calcium isotopes 40Ca+, 42Ca+, 44Ca+ and 48Ca+ with an accuracy better than 100 kHz by employing the PRS technique. Furthermore, the isotope shift difference between the D1 and D2 line of calcium ions has been resolved for the first time. As a result from the precision isotope shift measurements, the uncertainties of the relative field and mass shift constants in the respective transitions as well as the mean square nuclear charge radii of these calcium isotopes have been improved.
[1] Y. Wan et al. Nat. Commun 5, 4096 (2014)
[2] F. Gebert et al. Phys. Rev. Lett. 115, 053003(2015)