SURVEY OF SOME RECENT EXPERIMENTAL-ANALYSIS OF 3P(5)3D(N-LIKE SPECTRA(1) CONFIGURATIONS AND OF RH I)

Discussed in this article are two classes of configurations for which atomic calculations performed with a Cowan Code package fail to give s ufficiently reliable results. The general situation with the accuracy of the theoretical predictions of the structure of the 3p(5)3d(N+1) co nfigurations is outlined. Results of semiempirical calculations of ene rgy levels in Fe VII and Fe VII are presented It is shown that deviati ons from experimental values of energy levels are in the range of seve ral thousand wavenumbers. New identifications are made for the 3p(5)3d (2) levels in Fe VIII. A comparison of experimental spectra of the 4d( 9)-4d(8)4f transitions in CdIV-Sb VII with the calculated ones is made . It is shown that calculated relative transition probabilities disagr ee with an order of magnitude with the relative intensities of the lin es of this transition array in experimental spectra of Cd IV-Sn VI ion s.