Stark halfwidth trends along the homologous sequence of doubly ionized noble gases

Abstract

Aims. The aim of this work is to analyze the behavior of experimentally determined Stark halfwidths for (n− 1)d− np and ns − np transitions along the homologous sequence of doubly ionized noble gases. Methods. We analyzed the Stark halfwidth trends including all available experimental data. Stark halfwidth results for the above mentioned transitions and corresponding multiplets were compared with the halfwidths calculated using the modified semiempirical formula (MSE) and the simplified modified semiempirical formula (SMSE). In case of Ne III the calculation made by semiclassicalperturbation formalism (SCPF) is also presented. Results. Stark halfwidths corresponding to (n − 1)d − np and ns − np transitions have been analyzed along the homologous sequence of doubly ionized noble gases. For all multiplets observed in this work, the analysis shows that the halfwidths of the spectral lines belonging to the same transition show a similar trend along the homologous sequence. Stark halfwidths of ns − np transitions have a clearly increasing trend. On the other hand, for (n − 1)d − np transitions, there are not enough data to make a similar conclusion. This type of trend analysis can be useful for Stark halfwidth predictions and hence for spectroscopic diagnostics of astrophysical plasmas.

Forty Years of the Applications of Stark Broadening Data Determined with the Modified Semiempirical Method

“…Another topic is the investigation of regularities and systematic trends of Stark broadening parameters for spectral lines of non-hydrogenic homologous ions. Stark halfwidth trends along the homologous sequence of singly [74] and doubly ionized noble gases [61] have been investigated.…”

Electric dipole transitions between low-lying levels in doubly ionized krypton, xenon, and radon

“…In the development of lasers and laser techniques, xenon has always had an important role and is also an important element for light sources and development of lamps because of its rich emission spectrum, and Xe III (Te-like) is interesting for astrophysics as well, for example it was identified in the planetary nebula NGC 7027 [19]. For Xe III, there are some studies including lifetimes and radiative transitions parameters, in particular metastable states [14,15,[20][21][22][23][24][25][26][27][28].…”