Experimental study of the<i>3p</i>-<i>3d</i>intershell interaction in Ca, Sc, Ti, V, and Cr metals

Abstract

The photoionization cross section of the 3d valence band is obtained for Ca through Cr in the photon-energy range between 15 and 150 eV. Strong interference-like resonances are observed in the region of the 3p threshold. The resonances show a double structure probably due to shakeup effects.