Dimitrijević M Spectral Line Shapes in Astrophysics 2020 torrent

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Spectral lines, their widths, and shapes, are powerful tools for emitting/absorbing gas diagnostics in different astrophysical objects (from the Solar system to the most distant objects in the Universe—quasars). The emission/absorption lines of astrophysical objects are produced over a wide range of distances from an observer and under a wide range of physical and kinematical conditions. Therefore, in astrophysical objects, the lines from X-ray (Fe K) to the radio (radio recombination line) have been observed. On the other hand, the experimental and theoretical investigations of laboratory plasma have been applied in spectroscopic astrophysical research, especially in atomic data needed for line shape calculations. Data on spectral lines and their profiles are also important for diagnostics, analysis and modelling of fusion plasma, laser produced plasma, lasers design and development and various plasmas in industry and technology like light sources based on plasmas or welding and piercing of metals by laser produced plasma. This Special Issue of Atoms will highlight the need for continuing research on the spectral line shapes and will review present investigation in astrophysics where spectral line shapes have been used as a tool to investigate physical and kinematical properties of celestial objects. Moreover, there will be a number of studies of spectral line shapes in laboratory plasma, fusion plasma, laser-produced plasma, and about atomic data needed for the calculation of spectral line properties