Freiburg 2024 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 66: Precision Spectroscopy of Atoms and Ions V / Ultra-cold Plasmas and Rydberg Systems II (joint session A/Q)
Q 66.2: Talk
Friday, March 15, 2024, 14:45–15:00, HS 1098
Laser-induced population transfer in 25Mg+ at the CRYRING@ESR storage ring — •Konstantin Mohr for the STOA collaboration — Institut für Kernphysik, TU Darmstadt, Germany
At the magnetic storage ring CRYRING@ESR located at the GSI facility for heavy ion research the laser spectroscopy experiment is performed on 25Mg+ to investigate the interplay between internal and external degrees of freedom, i.e. quantum states and particle momenta.
Particular interest is devoted to the question whether it is possible to achieve and maintain a nuclear polarization of 25Mg+ by optical pumping within the magnetic manifold of the hyperfine structure. This was studied with an electron-cooled coasting ion beam as well as in bunched beam operation at energies of about 155keV/u. In bunched-beam operation, it turned out that both the laser-induced spontaneous force and the varying velocity of the ions due to synchrotron oscillations need to be considered in order to explain the subtleties of the resonance shape.
We present our recent results and discuss the dynamic behavior of both modes of operation.
We acknowledge support from the BMBF under contract numbers 05P21RDFA1 and 05P19PMFA1, and from the DFG–Project-Id 279384907–SFB 1245.
Keywords: Laser spectroscopy; Hyperfine structure; Optical pumping