Stark broadening and regularities of ionized neon and argon spectral lines

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

“…For that purpose, we used the modified semiempirical formula MSE (Dimitrijević & Konjević 1980) and the simplified modified semiempirical formula SMSE (Dimitrijević & Konjević 1987) which we discuss below. The best agreement with the calculated halfwidths for Ne III is obtained with data from Konjević & Pittman (1987), Purić et al (1988) and Uzelac et al (1993); for Ar III with data from Konjević & Pittman (1987) and Djurović et al (2011) and close results from Kobilarov & Konjević (1990) and Djeniže et al (1996); for Kr III the best agreement is obtained with data from Konjević & Pittman (1987) andĆirišan et al (2011 and, finally, for Xe III with data from Konjević & Pittman (1987) and Peláez et al (2006Peláez et al ( , 2009. Taking into account experimental errors and calculation uncertainties, the experimental and theoretical data for all Ne III, Ar III, Kr III and Xe III lines for ns − np transition agree reasonably well, if we exclude results from Iriarte et al (1997).…”

“…7b). There are only three halfwidth results from Purić et al (1988) (Ne III case), two of them are very close and cannot be distinguished in Fig. 7b, but the dispersion of the results is within ±14%.…”

“…2) are taken from Konjević & Pittman (1987), Purić et al (1988), Uzelac et al (1993), Blagojević et al (2000) and Milosavljević et al (2001). Here one should notice that the 2d level does not exist for Ne III.…”

“…3) are taken from Platiša et al (1975), Konjević & Pittman (1987), Purić et al (1988), Kobilarov & Konjević (1990), Djeniže et al (1996), Bukvić et al (2008) and Djurović et al (2011). Results for Kr III (Fig.…”

“…Owing to these similarities, a gradual increase of the spectral line halfwidths, i.e., the systematic trend should be expected in these cases. For the analysis of (n − 1)d − np and ns−np transitions, the following references are available: Platiša et al (1975), Konjević & Pittman (1987), Purić et al (1988), Kobilarov & Konjević (1990), Uzelac et al (1993), Djeniže et al (1996), Iriarte et al (1997), Romeo y Bidegain et al (1998), Ahmad et al (1998), Blagojević et al (2000), Milosavljević et al (2000Milosavljević et al ( , 2001, Seidel et al (2001), Peláez et al (2006), Bukvić et al (2008), Peláez et al (2009Peláez et al ( ),Ćirišan et al (2011 and Djurović et al (2011).…”