Classification of Transitions in the euv Spectra of Y ix–xiii, Zr x–xiv, Nb xi–xv, and Mo xii–xvi*

Abstract

The spectra of Y ix–xiii, Zr x–xiv, Nb xi–xv, and Mo xii–xvi were investigated in the range of 45–350 Å. Spectroscopic transitions belonging to the isoelectronic sequences of Co i, Ni i, Cu i, and Ga i were classified. Some unclassified lines are also listed.