Abstract

The spectrum of zinc was photographed in the 100-300 Å region on a 10.7 m grazing incidence spectrograph using a triggered spark light source. 335 lines were classified in the Zn VII 3d6–3d54p transition array, resulting in the establishment of 30 of the 34 levels of the 3d6 configuration and 103 of the 214 levels of the 3d54p. The ground configuration 3d6 was described by a generalized least-squares fit (GLSF) involving orthogonal operators to a set of 3dN configurations. This yielded a mean error of 3 cm−1 for its level values. The excited configuration was described by the conventional Slater Condon parameter set, giving a mean error of 105 cm−1.

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