Abstract
Recent work in astrophysics and in plasma physics has yielded a wealth of important data for highly ionized atoms. The results have provided strong motivations for theoretical developments as well as for complementary laboratory experiments. Light sources such as low inductance vacuum sparks, exploding wires, laser-produced plasmas or foil-excited fast ions have been widely used in the latter case. A review is here given of some of the results obtained in recent years. Regularities of energy levels, ionization potentials and fine structure are thus summarized, the emphasis being placed on systems of relevance to the impurity problems in Tokamaks. New results for forbidden lines and studies of the structure of highly ionized, heavy atoms are also discussed. Some progress in the determination of atomic transition probabilities is briefly reported.
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