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physics.atom-ph2025
Intensity-dependent precision two-photon Doppler-free spectroscopy of Xe using narrow-bandwidth long-pulse deep-UV laser radiation
M. H. Rayment, R. Stech, F. Merkt
We report on a precision measurement of the transition wavenumber of Xe by Doppler-fre…
physics.atom-ph2025
Combining laser cooling and Zeeman deceleration for precision spectroscopy in supersonic beams
Gloria Clausen, Laura Gabriel, Josef A. Agner +4
Precision spectroscopic measurements in atoms and molecules play an increasingly important role in chemistry and physics, e.g., to characterize structure and dynamics at long times…
physics.atom-ph2025
Metrology in a two-electron atom: The ionization energy of metastable triplet helium ()
Gloria Clausen, Kai Gamlin, Josef A. Agner +2
Helium (He) is the ideal atom to perform tests of ab-initio calculations in two-electron systems that consider all known effects, including quantum-electrodynamics and nuclear-size…