Partial Auger decay rates of core-ionized molecular states in HCl and DCl

The Cl 2p ionization and the subsequent 2p-1 to 2 pi -2 Auger decay in HCl and DCl molecules have been studied using synchrotron radiation. The Auger spectra have been decomposed and assigned to the transitions from the 2 Pi 1/2, 2 Sigma 1/2 and 2 Pi 3/2 molecular states of the 2p core hole configuration. The 2 Sigma 1/2 and 2 Pi 3/2 states have been found to be separated by 79(8) meV (HCl) and 83(8) meV (DCl). The partial Auger decay rates from different core ionized states have been shown to differ considerably.