Lifetimes of Rydberg states in ions of the group II elements

Precise Computation of Energy Levels and Radiative Lifetimes in the s, p, d, and f Sequence of Hydrogen Isotope, with Natural Line Widths

“…And in past few years many elements in their atomic and ionic states were studied by this theory because of its semi-empirical nature. All these studies show remarkably good agreement in comparison with experimental results [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Radiative Lifetimes for Singly Ionized Beryllium

“…Moreover, our lifetime results have been compared with the semiempirical calculations given by Kurucz [31]. As a result of comparisons, it can be seen from Table I that the average agreements of our lifetime values obtained by using the WBEPM theory and the QDO theory are ±2-3% to other theoretical results [21][22][23][24][25][26][27], are ±9% to the semi-empirical calculations given by Kurucz [31]. Experimental results are scarcely available for comparisons, especially for highly excited states.…”

“…The last lines of each set of states given as M lt in Table I represent the lifetimes of multiplet lines. Our lifetime results have been compared with some theoretical results obtained from the relativistic many-body calculations using a high-precision relativistic all-order method which includes all single, double, and partial triple excitations of the Dirac-Fock wave functions given by Safranova et al [21], the multiconfiguration HartreeFock + Breit-Pauli (MCHF+BP) method results given by Froese Fischer et al [22], the compilation of calculated lifetimes using a numerical Coulomb approximation with a Hartree-Slater core (CAHS) approach given by Theodosiou [23], the Fues model potential (FMP) approach calculations given by Glukhov et al [24,25], the presented values in the Grotrian database [26], the numerical Coulomb approximation results given by Lindgard et al [27], with some experimental measurement values given by Bromander [28], Hontzeas et al [29] and Andersen et al [30]. The experimental results are given together with their uncertainty rating.…”

Addressing single trapped ions for Rydberg quantum logic

“…After side band cooling and optical pumping to the 4S 1/2 , ±1/2 state, we reach about 90% population transfer to the desired 3D 5/2 , m state, with a single π-rotation. In contrast to the sharp 4S 1/2 ↔ 3D 5/2 resonance, the resonance width for the transition to the Rydberg 22F state is much broader due to the comparatively short lifetime of this state (τ = 200 ns [30]), the thermal motion of the ion and the linewidth of the VUV radiation. In the F 7/2 manifold a magnetic field of B = 0.28 mT yields a frequency splitting of 4.5 MHz.…”