Isotope shifts of 6s5d ${}^3$D-states in neutral Barium

Abstract

Laser spectroscopy of the low lying ${}^1$P and ${}^3$D states in atomic barium has been performed. This work contributes substantially to the development of an effective laser cooling and trapping for heavy alkaline earth elements and aims in particular for a better understanding of the atomic wave function of these systems. Isotope shifts and hyperfine structures are ideal probes for the wave functions at the position of the nucleus. This is essential input for a theoretical evaluation of the sensitivity to fundamental symmetry breaking properties like permanent electric dipole moments. We report the first isotope shift measurements of the ${}^3$D${}_{1,2}$-${}^1$P${}_1$ transitions. A deviation of the King plot from its expected behavior has been observed. Further we have optically resolved the hyperfine structure of the ${}^3$D${}_{1,2}$ states.

7 pages, 7 figures

References in corpus (3)

• Laser-trapping of Ra-225 and Ra-226 with repumping by room temperature blackbody radiation
• Production and trapping of radioactive atoms at the TRI\muP facility
• Development of a thermal ionizer as ion catcher

Cited by in corpus (5)

• Non-linear isotope-shift effects in Be-like, B-like, and C-like argon
• Theoretical isotope shifts in neutral barium
• Absolute frequency measurement of the 7s${}^2$ ${}^1$S${}_0$ $-$ 7s7p ${}^1$P${}_1$ transition in ${}^{225}$Ra
• Fully Collective Superradiant Lasing with Vanishing Sensitivity to Cavity Length Vibrations
• Direct measurement of isotope shifts in the barium 6s${}^2$ ${}^1$S${}_0$-5d6p ${}^3$D${}_1^{\text{o}}$ transition