Core-to-Rydberg excitations and their Auger decay in the HCl and DCl molecules

The resonant Auger electron spectra of the HCl and DCl molecules have been measured at the first core-to-Rydberg resonances. The low binding energy region of the spectra has been decomposed into transitions to different bound states and their vibrational progressions. Several transitions have been assigned using the strict spectator model. The total ion yield spectrum of HCl in the energy region of the core-to-Rydberg resonances has been recorded and its assignment refined with the help of the Auger electron and chlorine 2p photoelectron spectra. {} 1996 The American Physical Society.