2019/08/09 by Peggy E. Atkinson, Jesse S. Schelfhout, J. Schelfhout +2
Chemistry · Physics and Astronomy · #Advanced Frequency and Time Standards #Analytical Chemistry (journal) #Atomic and Molecular Physics #Atomic physics #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Doppler effect #Hyperfine structure #Laser #Nuclear magnetic resonance #Optics #Physics #Quadrupole #Quantum mechanics #Spectroscopy #Ytterbium #physics.atom-ph
paper · pdf · doi:10.1103/physreva.100.042505
published as Phys. Rev. A 100, 042505 (2019) · 10 pages, 8 figures
arxiv created 2019/08/09 · openalex created_date 2019/08/22 · openalex publication_date 2019/10/14 · arxiv updated 2019/10/23 · openalex updated_date 2026/08/05
Optical frequency measurements of the intercombination line (6s2)\phantom\rule0.16em0ex1S0\ensuremath-(6s6p)\phantom\rule0.16em0ex3P1 in the isotopes of ytterbium are carried out with the use of sub-Doppler fluorescence spectroscopy on an atomic beam. A dispersive signal is generated to which a master laser is locked, while frequency counting of an auxiliary beat signal is performed via a frequency comb referenced to a hydrogen maser. The relative separations between the lines are used to evaluate the 3P1-level magnetic dipole and electric quadrupole constants for the fermionic isotopes. The center of gravity for the 3P1 levels in 171Yb and 173Yb are also evaluated, where we find significant disagreement with previously reported values. These hyperfine constants provide a valuable testbed for atomic many-body computations in ytterbium.