  An observed broad resonance peak in dissociative electron attachment (DEA)
cross sections to a molecule might be due to either closely lying or
overlapping resonances involved in the process. We developed a state-of-the-art
experimental approach that enables us to identify unambiguously both the
closely lying and the overlapping resonances based on kinetic energy and/or
angular distribution measurements of fragment negative ion(s) generated from
DEA process. Experimental observations strongly supported by theoretical
potential energy curve calculations unambiguously identify previously
unresolved overlapping resonances in DEA to chlorine molecule.
