Lifetimes of the ns<sup>1</sup> np<sup>6</sup> <sup>2</sup>S<sub>1/2</sub> states of singly ionized argon, krypton and xenon
S Lauer; H Liebel; F Vollweiler; H Schmoranzer; B M Lagutin; Ph V Demekhin; I D Petrov; V L Sukhorukov
Журнал:
Journal of Physics B: Atomic, Molecular and Optical Physics
Дата:
1999-04-28
Аннотация:
The lifetimes of the ns<sup>1</sup> np<sup>6</sup> <sup>2</sup>S<sub>1/2</sub> states of Ar II, Kr II and Xe II were determined by measuring the fluorescence decay curves after selective excitation with pulsed monochromatized synchrotron radiation. The lifetimes are <sub>Ar</sub> = (4.684±0.019) ns, <sub> Kr</sub> = (30.78±0.17) ns, and <sub> Xe</sub> = (35.93±0.20) ns. Calculations performed within the configuration interaction approach show the strong dependence of the calculated lifetimes on the configuration interaction. It is proposed to use the precise lifetime values for a test of future calculations of the effective value of the Coulomb interaction of electrons.
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