1 Introduction

Data on the sodium spectral lines, as well as on spectral lines from its various ionization stages are important not only for astrophysics, as e.g. for the consideration of radiative transfer through subphotospheric layers, but also for the fusion plasmas and laser-produced plasmas research. An additional interest for such results provides the development of soft X-ray lasers, where Stark broadening data are needed to calculate gain values, model radiation trapping and to consider photoresonant pumping schemes (see e.g. Griem & Moreno 1990; Fill & Schöning 1994), provided an additional interest for such results.

This paper is the nineteenth of a series devoted to the research of Stark broadening parameters of spectral lines of multicharged ions (see Dimitrijevi & Sahal-Bréchot 1995 and references therein, as well as Dimitrijevi & Sahal-Bréchot 1996a,b, 1997, 1998a-c). In accordance with our project (see e.g. Dimitrijevi 1996) to obtain as large as possible set of reliable Stark broadening data needed for the consideration and modeling of astrophysical, laboratory, laser-produced, fusion plasmas, and plasmas in various devices, we have calculated within the semiclassical-perturbation formalism (Sahal-Bréchot 1969a,b), electron-, proton-, and He III-impact line widths and shifts for 57 Na X multiplets.