2022
DOI: 10.1103/physreva.106.013114
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Multiple photodetachment of oxygen anions via K -shell excitation and ionization: Direct double-detachment processes and subsequent deexcitation cascades

Abstract: Experimental cross sections for m-fold photodetachment (m = 2 − 5) of oxygen anions via Kshell excitation and ionization were measured in the photon-energy range of 525-1500 eV using the photon-ion merged-beams technique at a synchrotron light source. The measured cross sections exhibit clear signatures of direct double detachment, including double K-hole creation. The shapes of the double-detachment cross sections as a function of photon energy are in accord with Pattard's [J. Phys. B 35, L207 (2002)] empiric… Show more

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