%0 Generic %A Cheng, Yongjun %A Mitroy, J %D 2013 %T Absorption oscillator strengths for some low-lying transitions of Ga+ %U https://iop.figshare.com/articles/dataset/_Absorption_oscillator_strengths_for_some_low_lying_transitions_of_Ga_sup_sup_/1012717 %R 10.6084/m9.figshare.1012717.v1 %2 https://iop.figshare.com/ndownloader/files/1480540 %K group III ions %K blackbody radiation shift %K blackbody radiation shifts %K clock transitions %K oscillator strengths %K polarizabilitie %K configuration interaction method %K rm %K phase approximation %K Ga 2 %K CICP oscillator strengths %K RRPA column lists calculations %K Atomic Physics %K Molecular Physics %X

Table 3. Absorption oscillator strengths for some low-lying transitions of Ga+. The RRPA column lists calculations performed in the relativistic random phase approximation. The CICP oscillator strengths were obtained from calculations where the core-polarization potentials were tuned to give the energies of the identified spin–orbit state. The notation a[b] means a × 10b.

Abstract

The blackbody radiation shift of the Ga+4{\rm s}^2 \ ^1{\rm S}^{\rm e}_0 \rightarrow 4{\rm s}4{\rm p} \ ^3{\rm P}^{\rm o}_0 clock transition is computed to be −0.0140 ± 0.0062 Hz at 300 K. The small shift is consistent with the blackbody radiation shifts of the clock transitions of other group III ions which are of a similar size. The polarizabilities of the Ga+4{\rm s}^2 \ ^1{\rm S}^{\rm e}_0, 4{\rm s}4{\rm p} \ ^3{\rm P}^{\rm o}_0, and 4{\rm s}4{\rm p} \ ^1{\rm P}^{\rm o}_1 states were computed using the configuration interaction method with an underlying semi-empirical core potential. Quadrupole and non-adiabatic dipole polarizabilities were also computed. A byproduct of the analysis involved calculations of the low-lying spectrum and oscillator strengths, including polarizabilities, of the Ga2 + ion.

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