E-paper

Publication year: 2022

Journal: arXiv

ISSN: 2469-9926

eISSN: 2469-9934

DOI Link: https://doi.org/10.48550/arXiv.2207.07329

Publisher: Arxiv.org

Abstract: 
Experimental cross sections for m-fold photodetachment (m = 2-5) of oxygen anions via K-shell 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)] empirical scaling law. We have also followed the complex de-excitation cascades that evolve subsequently to the initial double-detachment events by systematic large-scale cascade calculations. The resulting theoretical product charge-state distributions are in good agreement with the experimental findings.

Harvard Citation style: Schippers, S., Hamann, A., Perry-Sassmannshausen, A., Buhr, T., Muller, A., Martins, M., et al. (2022) Multiple photodetachment of oxygen anions via K-shell excitation and ionization: Direct double-detachment processes and subsequent deexcitation cascades [Preprint]. arXiv, Article 2207.07329. https://doi.org/10.48550/arXiv.2207.07329

APA Citation style: Schippers, S., Hamann, A., Perry-Sassmannshausen, A., Buhr, T., Muller, A., Martins, M., Reinwardt, S., Trinter, F., & Fritzsche, S. (2022). Multiple photodetachment of oxygen anions via K-shell excitation and ionization: Direct double-detachment processes and subsequent deexcitation cascades. arXiv. https://doi.org/10.48550/arXiv.2207.07329