We present a terrestrial measurement of the Land\'e $g$ factor of the $5{D}_{5/2}$ state of singly ionized barium. Measurements were performed on single Doppler-cooled ${}^{138}{\mathrm{Ba}}^{+}$ ions in a linear Paul trap. A frequency-stabilized fiber laser with a nominal wavelength of $1.762$ $\ensuremath{\mu}$m was scanned across the $6{S}_{1/2}\ensuremath{\leftrightarrow}5{D}_{5/2}$ transition to spectroscopically resolve transitions between Zeeman sublevels of the ground and excited states. From the relative positions of the four narrow transitions observed at several different values for the applied magnetic field, we find a value of $1.2020\ifmmode\pm\else\textpm\fi{}0.0005$ for ${g}_{5{D}_{5/2}}$ .We present a terrestrial measurement of the Land\'e $g$ factor of the $5{D}_{5/2}$ state of singly ionized barium. Measurements were performed on single Doppler-cooled ${}^{138}{\mathrm{Ba}}^{+}$ ions in a linear Paul trap. A frequency-stabilized fiber laser with a nominal wavelength of $1.762$ $\ensuremath{\mu}$m was scanned across the $6{S}_{1/2}\ensuremath{\leftrightarrow}5{D}_{5/2}$ transition to spectroscopically resolve transitions between Zeeman sublevels of the ground and excited states. From the relative positions of the four narrow transitions observed at several different values for the applied magnetic field, we find a value of $1.2020\ifmmode\pm\else\textpm\fi{}0.0005$ for ${g}_{5{D}_{5/2}}$.

arXiv:1007.1481Physical Review ASep 27, 20106 citations

Light-induced drift of barium atoms

Č. Hradečný, J. Slovák, T. Těthal +2 more

An observation of light-induced drift (LID) of atoms with an intermediate metastable level between the ground and excited resonance levels is reported. The drift of atoms of barium was investigated. Molecular nitrogen was used as a buffer gas. The 5d $^{1}$ D metastable state of Ba atoms was quenched in collisions with ${\mathrm{N}}_{2}$ molecules. It has been deduced from the experimental results that the collision cross section of Ba atoms with ${\mathrm{N}}_{2}$ molecules is larger for Ba atoms in the ground state than in the 6p $^{1}$ P excited state. The maximal LID velocity was about 250 cm/s.An observation of light-induced drift (LID) of atoms with an intermediate metastable level between the ground and excited resonance levels is reported. The drift of atoms of barium was investigated. Molecular nitrogen was used as a buffer gas. The 5d $^{1}$D metastable state of Ba atoms was quenched in collisions with ${\mathrm{N}}_{2}$ molecules. It has been deduced from the experimental results that the collision cross section of Ba atoms with ${\mathrm{N}}_{2}$ molecules is larger for Ba atoms in the ground state than in the 6p $^{1}$P excited state. The maximal LID velocity was about 250 cm/s.

Physical Review AApr 1, 19954 citations

We present a terrestrial measurement of the Land\'e

g

factor of the

5{D}_{5/2}

state of singly ionized barium. Measurements were performed on single Doppler-cooled

{}^{138}{\mathrm{Ba}}^{+}

ions in a linear Paul trap. A frequency-stabilized fiber laser with a nominal wavelength of

1.762

$\ensuremath{\mu}$m was scanned across the $6{S}_{1/2}\ensuremath{\leftrightarrow}5{D}_{5/2}$ transition to spectroscopically resolve transitions between Zeeman sublevels of the ground and excited states. From the relative positions of the four narrow transitions observed at several different values for the applied magnetic field, we find a value of $1.2020\ifmmode\pm\else\textpm\fi{}0.0005$ for

{g}_{5{D}_{5/2}}

^{1}

D metastable state of Ba atoms was quenched in collisions with

{\mathrm{N}}_{2}

molecules. It has been deduced from the experimental results that the collision cross section of Ba atoms with

{\mathrm{N}}_{2}

molecules is larger for Ba atoms in the ground state than in the 6p

^{1}

P excited state. The maximal LID velocity was about 250 cm/s.