A CRITICAL COMPARISON OF SELECTED 1S AND 2P CORE HOLE WIDTHS

Abstract The linewidths of a series of core excited atoms and small molecules have been measured in photoabsorption with ultra high resolution. The widths of transitions to the antibonding π and Rydberg states from the SF 6 1s levels of carbon, nitrogen and oxygen in CO, CO 2 , N 2 , N 2 O and O 2 were measured. In addition the Ne 1s, Ar 2p and sulphur 2p Rydberg states of SF 6 have been measured. The lifetime widths of this range of chemical states and neutral excited states are compared critically with values from the literature derived from x-ray absorption and other spectroscopies.