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High-precision electron affinity of oxygen

Author

Listed:
  • Moa K. Kristiansson

    (Stockholm University)

  • Kiattichart Chartkunchand

    (Stockholm University
    RIKEN)

  • Gustav Eklund

    (Stockholm University)

  • Odd M. Hole

    (Stockholm University)

  • Emma K. Anderson

    (Aarhus University)

  • Nathalie Ruette

    (Stockholm University)

  • Magdalena Kamińska

    (Stockholm University)

  • Najeeb Punnakayathil

    (Stockholm University)

  • José E. Navarro-Navarrete

    (Stockholm University)

  • Stefan Sigurdsson

    (Stockholm University)

  • Jon Grumer

    (Uppsala University)

  • Ansgar Simonsson

    (Stockholm University)

  • Mikael Björkhage

    (Stockholm University)

  • Stefan Rosén

    (Stockholm University)

  • Peter Reinhed

    (Stockholm University)

  • Mikael Blom

    (Stockholm University)

  • Anders Källberg

    (Stockholm University)

  • John D. Alexander

    (Stockholm University)

  • Henrik Cederquist

    (Stockholm University)

  • Henning Zettergren

    (Stockholm University)

  • Henning T. Schmidt

    (Stockholm University)

  • Dag Hanstorp

    (University of Gothenburg)

Abstract

Negative ions are important in many areas of science and technology, e.g., in interstellar chemistry, for accelerator-based radionuclide dating, and in anti-matter research. They are unique quantum systems where electron-correlation effects govern their properties. Atomic anions are loosely bound systems, which with very few exceptions lack optically allowed transitions. This limits prospects for high-resolution spectroscopy, and related negative-ion detection methods. Here, we present a method to measure negative ion binding energies with an order of magnitude higher precision than what has been possible before. By laser-manipulation of quantum-state populations, we are able to strongly reduce the background from photodetachment of excited states using a cryogenic electrostatic ion-beam storage ring where keV ion beams can circulate for up to hours. The method is applicable to negative ions in general and here we report an electron affinity of 1.461 112 972(87) eV for 16O.

Suggested Citation

  • Moa K. Kristiansson & Kiattichart Chartkunchand & Gustav Eklund & Odd M. Hole & Emma K. Anderson & Nathalie Ruette & Magdalena Kamińska & Najeeb Punnakayathil & José E. Navarro-Navarrete & Stefan Sigu, 2022. "High-precision electron affinity of oxygen," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33438-y
    DOI: 10.1038/s41467-022-33438-y
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