Disentangling Auger decays in O₂ by photoelectron-ion coincidences.

ABSTRACT: In non-resonant Auger electron spectroscopies, multi core-ionized states lead to numerous energetically close-lying electronic transitions in Auger spectra, this hampering the assignment and interpretation of the experimental results. Here we reveal a new method to overcome this intrinsic limitation of non-resonant inner-shell spectroscopies. In a proof-of-principle experiment performed for the O₂ molecule, most of the Auger final states are dissociative, and we measure in coincidence the kinetic energy of the photoelectron and the kinetic energy release of the (O⁺, O⁺) ion pairs produced after the Auger decay of the O 1s^-1 core-ionized states. The Auger final states are assigned using energy conservation. We fully separate the contributions from

SUBMITTER: Liu XJ 

PROVIDER: S-EPMC5460142 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature