Stark Parameter Regularities of Multiply Charged Ion Spectral Lines Originating from the Same Transition Array

Stark Width Regularities within Beryllium Spectral Series

“…Therefore, the Stark parameter dependencies on x and Z c were deduced from the large scale of semiclassical (Griem 1974) or semiempirical (Griem 1968) and modified semiempirical calculations (Dimitrijevic & Konjevic 1980). The obtained relations were verified using the existing experimental and theoretical data (Puric et al 2008).…”

“…This, together with the Stark B database prepared by Dimitrijevic & Sahal-Bréchot (1992, 1994, opens an opportunity for studying different kinds of Stark broadening parameter regularities more seriously within similar spectra (Puric & Š cepanovic 1999;Šcepanovic & Puric 2003;Puric et al 2008;Tapalaga, Dojčinovic & Puric 2011;Elabidi & Sahal-Brechot 2011). This includes studies of regularities within multiplets and supermultiplets, spectral series, transition arrays, isoelectronic sequences, isonuclear sequences, homologous sequences, particular transitions (e.g., resonance and off-resonance) along the periodic table within a single stage of ionization, or within several ionization stages, as far as the influence of the atomic structure is concerned.…”

“…Therefore, it is of interest to exploit any possible theoretical approach that might provide simple relations from the systematic trends found in the Stark broadening data, both in simple and complex spectra. In several previous papers (Puric et al 1991;Puric, Miller & Lesage 1993;Puric et al 2008;Tapalaga et al 2011;Elabidi & Sahal-Brechot 2011) it has been shown that physics-based interpretation of the Stark broadening regularities could provide Stark parameters with an appropriate combination of reliability and computational simplicity.…”

“…The first group of papers (see Puric et al 2008 and references therein) is devoted to the evaluation of different types of regularities, such as dependence on atomic charge number, upper level ionization potential, atomic polarizability, principal quantum number and rest core charge of the emitter (seen by an electron undergoing transition), based on the Stark width and shift theoretical formulas obtained in different approximations: semiclassical, semiempirical and adiabatic. In the second group of papers (Wiese & Konjevic 1982 regularities are examined among the experimental results, and conclusions are drawn on the basis of studying the configuration of the atomic energy levels and the transition probabilities.…”

“…Both variables take into account the density of states perturbing the emitting state. However, some advantages of the present method are: (i) x-based trend analyses achieve better fits (compared to those obtained when integer quantum number is used instead; Puric et al 1987); (ii) using x-values, the lowering of the ionization potential (Inglis & Teller 1939) can be taken into account, predicting merging with continuum when the plasma environment causes the line's upper-state ionization potential to approach zero; and (iii) the dependence of the Stark width (w) on x is theoretically expected (Puric et al 1993;Puric et al 2008).…”