Radiative Transition Properties of Singly Charged Magnesium, Calcium, Strontium and Barium Ions

Abstract

Accurate values of electric dipole (E1) amplitudes along with their uncertainties for a number of transitions among low-lying states of Mg${}^{+}$, Ca${}^{+}$, Sr${}^{+}$, and Ba${}^{+}$ are listed by carrying out calculations using a relativistic all-order many-body method. By combining experimental wavelengths with these amplitudes, we quote transition probabilities, oscillator strengths and lifetimes of many short-lived excited states of the above ions. The uncertainties in these radiative properties are also quoted. We also give electric quadrupole (E2) and magnetic dipole (M1) amplitudes of the metastable states of the Ca${}^{+}$, Sr${}^{+}$, and Ba${}^{+}$ ions by performing similar calculations. Using these calculated E1, E2 and M1 matrix elements, we have estimated the transition probabilities, oscillator strengths and lifetimes of a number of allowed and metastable states. These quantities are further compared with the values available from the other theoretical studies and experimental data in the literature. These data will be immensely useful for the astrophysical observations, laboratory analysis and simulations of spectral properties in the above considered alkaline-earth metal ions.

arXiv commentAccepted for publication in ADNDT

References in corpus (34)

• Nanophotonic quantum phase switch with a single atom
• Experimental Quantum Computations on a Topologically Encoded Qubit
• Unexpectedly large charge radii of neutron-rich calcium isotopes
• 'Designer atoms' for quantum metrology
• A non-LTE study of neutral and singly-ionized calcium in late-type stars
• Precision Measurement of the Lifetime of the 3d D_{5/2} state in 40Ca+
• Calculations of parity nonconserving s-d transitions in Cs, Fr, Ba II, and Ra II
• New experimental and theoretical approach to the 3d D-level lifetimes of 40Ca+
• Tunable spin-spin interactions and entanglement of ions in separate wells
• Evaluation of the ultimate performances of a Ca+ single-ion frequency standard
• Blackbody radiation shift in a 43Ca+ ion optical frequency standard
• Frequency Metrology on single trapped ions in the weak binding limit: The 3s1/2-3p3/2 transition in 24-Mg+
• Precision measurement of the lifetime of the 6p 2P_1/2 level of Yb+
• Atomic data from the Iron Project. LXIV. Radiative transition rates and collision strengths for Ca II
• Dynamic polarizabilities for the low lying states of Ca+
• Measurement of dipole matrix elements with a single trapped ion
• Relativistic coupled-cluster studies of ionization potentials, lifetimes and polarizabilities in singly ionized calcium
• The Abundance of Mg in the Interstellar Medium
• Correlation Trends in the Hyperfine Structures of ${}^{210,212}$Fr
• 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
• Metastable level lifetimes from electron-shelving measurements with ion clouds and single ions
• Unexpectedly large difference of the electron density at the nucleus in the 4p ${}^2$P${}_{1/2,3/2}$ fine-structure doublet of Ca${}^{+}$
• 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
• Measurement of the branching fractions and lifetime of the $5D_{5/2}$ level of Ba${}^{+}$
• Measurements of the branching ratios for $6P_{1/2}$ decays in ${}^{138}$Ba${}^{+}$
• Parity Nonconservation in Odd-isotopes of Single Trapped Atomic Ions
• Broadband, unpolarized repumping and clearout light sources for Sr${}^{+}$ single-ion clocks
• Precision Measurement of the Quadrupole Transition Matrix Element in a Single Trapped ${}^{40}$Ca${}^{+}$
• Branching fractions for $P_{3/2}$ decays in Ba${}^{+}$
• Iterative Precision Measurement of Branching Ratios Applied to 5P states in 88Sr+
• Search for correlation effects in linear chains of trapped ions
• Combining experiments and relativistic theory for establishing accurate radiative quantities in atoms: the lifetime of the ${}^2$P${}_{3/2}$ state in ${}^{40}$Ca${}^{+}$
• Relativistic semiempirical-core-potential calculations in Ca${}^{+}$, Sr${}^{+}$, and Ba${}^{+}$ ions on Lagrange meshes

Cited by in corpus (8)

• Nebular spectra from Type Ia supernova explosion models compared to JWST observations of SN 2021aefx
• Electric dipole transition amplitudes for atoms and ions with one valence electron
• Role of triple excitations in calculating different properties of Ba+
• Theoretical characterisation of the barium II and radium II ions
• Investigating Roles of Triple Excitations for High-precision Determination of Clock Properties of Alkaline Earth Metal Singly Charged Ions
• Spectroscopic data of Rb-isoelectronic Zr and Nb ions for astrophysical applications
• Relativistic Coupled-cluster Theory Analysis of Properties of Co-like Ions
• Atomic Transition Probabilities of Neutral Calcium