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MO: Fachverband Molekülphysik
MO 27: Molecular Spectroscopy II
MO 27.5: Vortrag
Donnerstag, 5. März 2026, 15:30–15:45, P 204
The magnetic hyperfine structure of 1-indanol — •Kilian Hügel1,2, JuHyeon Lee1, Shilpa Yadav1, Sejun An1, Boris G. Sartakov1, Gerard Meijer1, and Sandra Eibenberger-Arias1 — 1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin 14195, Germany — 2Technical University of Munich, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany
Hyperfine interactions in molecules lead to small splittings of the energy levels due to various coupling mechanisms [1]. Studying such interactions is useful for example in the investigation of molecular geometries and for the design of quantum control experiments.
In our group, we are interested in the hyperfine structure of 1-indanol since it is the target molecule in our enantiomer-specific state transfer (ESST) experiments enabling quantum control of chiral molecules [2,3]. To investigate the hyperfine structure of such a complicated molecule with ten nuclear spins, we performed UV-microwave double-resonance spectroscopy in a cold, seeded molecular beam. Additionally, we developed a theoretical model treating the nuclear spin-spin interactions leading to 672 hyperfine lines per rotational transition connected to the absolute ground state. The calculated spectra match the measurements closely, confirming the theoretical model and enabling predictions of hyperfine effects in 1-indanol.
[1] C. H. Townes and A. L. Schawlow. Microwave Spectroscopy (Dover Publications, Mineola, New York, 1975). [2] A. O. Hernandez-Castillo et al. Phys. Chem. Chem. Phys. 23, 7048-7056 (2021). [3] JH. Lee et al. Nat. Commun. 15, 7441 (2024).
Keywords: hyperfine structure; nuclear spin-spin coupling; UV-microwave double resonance; high-resolution; chiral molecule