Measurements of the branching ratios for $6P_{1/2}$ decays in ${}^{138}$Ba${}^{+}$

Abstract

Measurement of the branching ratios for $6P_{1/2}$ decays to $6S_{1/2}$ and $5D_{3/2}$ in ${}^{138}$Ba${}^{+}$ are reported with the decay probability from $6P_{1/2}$ to $5D_{3/2}$ measured to be $p=0.268177\pm (37{)}_{\mathrm{stat}}-(20{)}_{\mathrm{sys}}$. This result differs from a recent report by $12\sigma$. A detailed account of systematics is given and the likely source of the discrepancy is identified. The new value of the branching ratio is combined with a previous experimental results to give a new estimate of $\tau =7.855(10)\mathrm{ns}$ for the $6P_{1/2}$ lifetime. In addition, ratios of matrix elements calculated from theory are combined with experimental results to provide improved theoretical estimates of the $6P_{3/2}$ lifetime and the associated matrix elements.

arXiv comment12 pages, 7 figure, updated corrected a few minor typos

References in corpus (15)

• Calculations of parity nonconserving s-d transitions in Cs, Fr, Ba II, and Ra II
• Blackbody radiation shift assessment for a lutetium ion clock
• Precision Measurement Method for Branching Fractions of Excited P1/2 States Applied to 40Ca+
• Measurement of dipole matrix elements with a single trapped ion
• Theoretical study of lifetimes and polarizabilities in Ba+
• Precision measurement of the branching ratio in the 6P3/2 decay of BaII with a single trapped ion
• Precision measurement of light shifts at two off-resonant wavelengths in a single trapped Ba+ ion and determination of atomic dipole matrix elements
• Laser Cooling of Radium Ions
• Precision measurement of the branching fractions of the 5p 2 P 1/2 state in 88 Sr + with a single ion in a micro fabricated surface trap
• Precision measurement of branching fractions of ${}^{138}$Ba${}^{+}$: Testing many body theories below one percent level
• Polarizability assessments of ion-based optical clocks
• Iterative Precision Measurement of Branching Ratios Applied to 5P states in 88Sr+
• Laser spectroscopy of ${}^{176}$Lu${}^{+}$
• Radio frequency spectroscopy measurement of the Landé g factor of the 5D5/2 state of Ba+ with a single trapped ion
• Dynamic polarizability measurements in ${}^{176}$Lu${}^{+}$

Cited by in corpus (14)

• High fidelity state preparation and measurement of ion hyperfine qubits with I > 1/2
• High-fidelity remote entanglement of trapped atoms mediated by time-bin photons
• Precision measurements on the ${}^{138}$Ba${}^{+}$ $6s^2{S}_{1/2}-5d^2{D}_{5/2}$ clock transition
• Precision calculation of hyperfine constants for extracting nuclear moments of 229Th
• Polarizability assessments of ion-based optical clocks
• C-band single photons from a trapped ion via two-stage frequency conversion
• Trapping, Shaping and Isolating of Ion Coulomb Crystals via State-selective Optical Potentials
• Radiative Transition Properties of Singly Charged Magnesium, Calcium, Strontium and Barium Ions
• Branching fractions for $P_{3/2}$ decays in Ba${}^{+}$
• Measurement of the tune-out wavelength for ${}^{133}$Cs at $880$ nm
• Electric dipole transition amplitudes for atoms and ions with one valence electron
• Electromagnetically-Induced-Transparency Cooling of High-Nuclear-Spin Ions
• Role of triple excitations in calculating different properties of Ba+
• Theoretical characterisation of the barium II and radium II ions