Oscillator Strengths for Allowed Transitions in Li(II)

Abstract

Electric dipole oscillator strengths have been computed for transitions between both multiplet and individual lines in the Li(II) ion. The weakest bound electron potential model theory has been used. We have employed both numerical Coulomb approximation wave functions and numerical non-relativistic Hartree-Fock wave functions in the determination of expectation values of radii. The necessary energy values have been taken from experimental ionization energies. The oscillator strengths calculated with parameters obtained by using the two different wave functions have been compared not only to each other but also to other data taken from literature. A good agreement with results in literature has been obtained.

Radiative Lifetimes for Singly Ionized Beryllium

“…In the determination of wave functions, n * , λ parameters and δ quantum defect parameter are required. In the previous papers, we presented how to obtain these parameters in detail [15][16][17][18][19][20].…”

“…Therefore, in calculating transition probabilities, oscillator strengths and lifetimes it is reasonable to use the WBEPM theory and the QDO theory, which has been successfully applied to numerical calculations of the atomic structure parameters of alkali atoms and other multi-electron systems in previous decades [15][16][17][18][19][20]. These calculation methods are especially useful when the large numbers of transition probabilities are required, since wave functions and matrix elements are computed quickly and automatically using only energy level, ionization potential data and the expectation values of radii belonging to levels as inputs.…”

Transition Probabilities, Oscillator Strengths and Line Strengths Result From Radiative Transitions

“…This idea and quantum defect models were recently combined by Zheng et al in the weakest bound electron potential model theory (WBEPM). The foundation of WBEPM rests on the proposal that in any system, the orbiting electrons may be grouped into the weakest and the non-weakest bound electrons [12][13][14][15][16]. The weakest bound electron is supposed to be in a field created by the nucleus and inner core electrons.…”