ABSTRACT
In Table 5.1.1 soft x-ray and extreme ultraviolet lasers are listing in order of increasing wavelength. The highly ionized lasing medium is specified by its oxidation state. The electron configurations of these highly ionized states are similar to those of neutral atoms with the same number of electrons. Thus Al10+, for example, which has only three electrons is described as "Li-like" and Se24+ (with ten electrons) is described as "Ne-like". The lasing transition and references to the experiments are given in the two final columns of Table 5.1.1.
