抄録
Photoelectron spectra have been measured on RbF in the photon energy region where 3d electrons of the Rb+ ion are excited. Two features appearing on the high-binding-energy side of the Rb+ 4s line and previously assigned to the configuration-interaction satellite and the energy loss of excited electrons are resonantly enhanced by excitations above the threshold of the 3d electron of the Rb+ ion, but the Rb+ 4s line itself is not. This fact shows that the configuration interaction is not important for the feature previously assigned to the satellite and that the origin of the feature previously assigned to the extrinsic energy-loss peak is inherent in the photoexcitation process. The features are assigned tentatively to complexes composed of two core holes with a trapped electron.
