Optogalvanic spectroscopy of the hyperfine structure of the $5p^{6}5d$ ${}^2{D}_{3/2,5/2}$ and $5p^{6}4f$ ${}^2{F}_{5/2,7/2}^o$ levels of La III

Abstract

We measure the hyperfine structure of the $5p^{6}5d$ ${}^2{D}_{3/2}$, $5p^{6}5d$ ${}^2{D}_{5/2}$, $5p^{6}4f$ ${}^2{F}_{5/2}^o$, and $5p^{6}4f$ ${}^2{F}_{7/2}^o$ levels in doubly-ionized lanthanum (La III; La${}^{2+}$) in a hollow cathode lamp using optogalvanic spectroscopy. Analysis of the observed spectra allows us to determine the hyperfine $A$ coefficients for these levels to be $A_{D3/2}=412(4)$ MHz, $A_{D5/2}=20(5)$ MHz, $A_{F5/2}=319(2)$ MHz, and $A_{F7/2}=155(4)$ MHz; and provide estimates for the hyperfine $B$ coefficients as $B_{D3/2}=105(29)$ MHz, $B_{D5/2}=157(40)$ MHz, $B_{F5/2}=-2(53)$ MHz, and $B_{F7/2}=171(51)$ MHz.

5 pages, 5 figures

References in corpus (2)

• Highly-charged ions for atomic clocks, quantum information, and search for $\alpha$-variation
• Parity nonconservation in Fr-like actinide and Cs-like rare-earth-metal ions

Cited by in corpus (1)

• Doubly-ionized lanthanum as a qubit candidate for quantum networks