<i>2p</i>absorption spectra of the<i>3d</i>elements

Abstract

The near-edge structure of the 2p absorption edges of the complete series of the 3d transition metals has been investigated by high-resolution electron-energy-loss spectroscopy. Structures in the spectra were observed that could not be resolved in previous studies. The data are compared with single-particle calculations of the 2p\ensuremath{\rightarrow}3d transition probability as well as with bremsstrahlung isochromat spectra. The comparison shows that the absorption spectra cannot be described by the density of unoccupied d states even when single-particle matrix-element effects are taken into account. Especially at the beginning of the 3d series, the interaction with the core hole is an important parameter.