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Q: Fachverband Quantenoptik und Photonik

Q 22: Nuclear and X-Ray Quantum Optics

Q 22.7: Vortrag

Dienstag, 3. März 2026, 12:45–13:00, P 11

Electron spectroscopy of the Mössbauer transition in 57Fe — •K Ravi¹, E Månsson¹, L Bocklage^1,2, S Velten¹, I Sergeev¹, M Seitz¹, S Rockenstein¹, D Schmitt³, M Kovacev^3,4, F Calegari^1,2,5, R Röhlsberger^1,6, and A Trabattoni^1,3,4 — ¹CFEL, Hamburg — ²CUI, Universität Hamburg — ³Leibniz University Hannover — ⁴Cluster of Excellence PhoenixD, Hannover — ⁵Department of Physics, Universität Hamburg — ⁶IOQ, FSU Jena

Electron dynamics govern how nuclei interact with their electronic environment. In 57Fe Mössbauer isotopes, internal-conversion electrons and Auger-Meitner emission offer a surface-sensitive alternative to fluorescence for probing electron-nuclear energy exchange. Using synchrotron excitation and time-of-flight detection at PETRA III, we resolve magnetic hyperfine splitting and nuclear inelastic spectra, establishing a nuclear-electronic spectroscopy of coupled nuclear, electronic, and phononic excitations.

Keywords: Mössbauer Effect; Synchrotron Radiation; Nuclear Excitation; Electron Spectroscopy; Synchrotron Radiation