850807.fig.004
Figure 4: Stark FWHM for the He I 5016 Å line as a function of the electron density. A large number of measured and calculated data are included. In this paper the line broadening for the (21 S-31 P) transition is calculated by using binary approximation (– – –) and including dynamical screening effect (–––). They are compared with the data of Gigosos et al. for pink circle (∘) independent and turquoise circle (∘) interacting particles [18, 19], (×) Bassalo et al. [41], () Berg et al. [42], orange circle (•) Pérez et al. [27], () Chiang et al. [43], () Diatta [44], (*) Milosavljević and Djeniže [45], () Kelleher [46], (□) Mijatović et al. [47], () Soltwisch and Kusch [40], and (+) Griem [1].