Fine structure splitting in argon x-ray emission spectra

X-ray emission spectrometry is a method of growing importance for a large number of problems in physics and applications in other fields, e.g. investigations of heavy ion sources, plasma diagnostics in connection with fusion research, astrophysics and basic research in other fields of physics. However, there is a lack of data required for the interpretation of spectra obtained especially in the region of highly ionized atoms. Since this is mainly caused by experimental difficulties, theoretical calculations are required to provide data that are necessary for the current studies. Therefore, the authors developed a program package to calculate various atomic properties of neutral and ionized atoms. In the present paper they analyze, how the fine structure splitting influences the x-ray spectrum emitted by atoms of a given element at various stages of ionization.