The need of precision atomic structure calculations for the study of plasma processes

The model for plasma diagnostics or analysis consists of atomic models and plasma models. The precision atomic structure model will stimulate the sophistication of the plasma model and will also provide us with the tools for precision diagnostics or analysis of the plasmas. Two elements for the precision atomic structure calculation have been discussed. One is the necessity of the relativistic treatment, and the other is the indispensability of taking into account the electron-electron correlation effects in multi-electron atoms or ions. The effect of the spectator satellite lines of the heavy atomic ions, which are doped in the inertial nuclear fusion plasma, is discussed in detail based on accurate atomic structure calculations. Precise and accurate calculations have been introduced for extreme ultra-violet optical transitions of atomic ions with atomic numbers ranging from 48 to 56. Intra N shell transitions of multiply charged xenon and tin ions are discussed in detail. (author)