2S hyperfine structure of atomic deuterium

Abstract

We have measured the frequency splitting between the $(2S,F=1/2)$ and $(2S,F=3/2)$ hyperfine sublevels in atomic deuterium by an optical differential method based on two-photon Doppler-free spectroscopy on a cold atomic beam. The result $f_{\mathrm{HFS}}^{(D)}(2S)=40924454(7)$ Hz is the most precise value for this interval to date. In comparison to the previous radio-frequency measurement we have improved the accuracy by the factor of three. The specific combination of hyperfine frequency intervals for metastable- and ground states in deuterium atom $D_{21}=8f_{\mathrm{HFS}}^{(D)}(2S)-f_{\mathrm{HFS}}^{(D)}(1S)$ derived from our measurement is in a good agreement with $D_{21}$ calculated from quantum-electrodynamics theory.

7 pages, 7 figures

References in corpus (5)

• Theory of Light Hydrogenlike Atoms
• New Limits to the Drift of Fundamental Constants from Laboratory Measurements
• Cold Collision Frequency Shift of the 1S-2S Transition in Hydrogen
• High-Precision Optical Measurement of the 2S Hyperfine Interval in Atomic Hydrogen
• Hyperfine structure in hydrogen and helium ion

Cited by in corpus (9)

• Precision physics of simple atoms and constraints on a light boson with ultraweak coupling
• Quantum electrodynamic corrections to the hyperfine structure of excited S states
• Improved all-order results for the one-loop QED correction to the hyperfine structure in light H-like atoms
• Testing the Stability of the Fine Structure Constant in the Laboratory
• Probing New Physics with Long-Range Neutrino Interactions: An Effective Field Theory Approach
• HFS interval of the $2s$ state of hydrogen-like atoms and a constraint on a pseudovector boson with mass below $1$keV$/c^2$
• Study of hyperfine structure in simple atoms and precision tests of the bound state QED
• Thermal radiative corrections to hyperfine structure of light hydrogen-like systems
• Precision study of hyperfine structure in simple atoms