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The electron affinity of astatine

Author

Listed:
  • David Leimbach

    (CERN
    University of Gothenburg
    Johannes Gutenberg-Universität)

  • Julia Karls

    (University of Gothenburg)

  • Yangyang Guo

    (University of Groningen)

  • Rizwan Ahmed

    (National Centre for Physics (NCP))

  • Jochen Ballof

    (CERN
    Johannes Gutenberg-Universität)

  • Lars Bengtsson

    (University of Gothenburg)

  • Ferran Boix Pamies

    (CERN)

  • Anastasia Borschevsky

    (University of Groningen)

  • Katerina Chrysalidis

    (CERN
    Johannes Gutenberg-Universität)

  • Ephraim Eliav

    (Tel Aviv University)

  • Dmitry Fedorov

    (Petersburg Nuclear Physics Institute - NRC KI)

  • Valentin Fedosseev

    (CERN)

  • Oliver Forstner

    (Friedrich-Schiller-Universität Jena
    Helmholtz-Institut Jena)

  • Nicolas Galland

    (Université de Nantes, CNRS)

  • Ronald Fernando Garcia Ruiz

    (CERN
    Massachusetts Institute of Technology)

  • Camilo Granados

    (CERN)

  • Reinhard Heinke

    (Johannes Gutenberg-Universität)

  • Karl Johnston

    (CERN)

  • Agota Koszorus

    (KU Leuven, Instituut voor Kern- en Stralingsfysica)

  • Ulli Köster

    (Institut Laue-Langevin)

  • Moa K. Kristiansson

    (Stockholm University)

  • Yuan Liu

    (Oak Ridge National Laboratory)

  • Bruce Marsh

    (CERN)

  • Pavel Molkanov

    (Petersburg Nuclear Physics Institute - NRC KI)

  • Lukáš F. Pašteka

    (Faculty of Natural Sciences, Comenius University)

  • João Pedro Ramos

    (SCK CEN, Research Centre Mol)

  • Eric Renault

    (Université de Nantes, CNRS)

  • Mikael Reponen

    (University of Jyväskylä)

  • Annie Ringvall-Moberg

    (CERN
    University of Gothenburg)

  • Ralf Erik Rossel

    (CERN)

  • Dominik Studer

    (Johannes Gutenberg-Universität)

  • Adam Vernon

    (The University of Manchester)

  • Jessica Warbinek

    (University of Gothenburg
    Johannes Gutenberg-Universität)

  • Jakob Welander

    (University of Gothenburg)

  • Klaus Wendt

    (Johannes Gutenberg-Universität)

  • Shane Wilkins

    (CERN)

  • Dag Hanstorp

    (University of Gothenburg)

  • Sebastian Rothe

    (CERN)

Abstract

One of the most important properties influencing the chemical behavior of an element is the electron affinity (EA). Among the remaining elements with unknown EA is astatine, where one of its isotopes, 211At, is remarkably well suited for targeted radionuclide therapy of cancer. With the At− anion being involved in many aspects of current astatine labeling protocols, the knowledge of the electron affinity of this element is of prime importance. Here we report the measured value of the EA of astatine to be 2.41578(7) eV. This result is compared to state-of-the-art relativistic quantum mechanical calculations that incorporate both the Breit and the quantum electrodynamics (QED) corrections and the electron–electron correlation effects on the highest level that can be currently achieved for many-electron systems. The developed technique of laser-photodetachment spectroscopy of radioisotopes opens the path for future EA measurements of other radioelements such as polonium, and eventually super-heavy elements.

Suggested Citation

  • David Leimbach & Julia Karls & Yangyang Guo & Rizwan Ahmed & Jochen Ballof & Lars Bengtsson & Ferran Boix Pamies & Anastasia Borschevsky & Katerina Chrysalidis & Ephraim Eliav & Dmitry Fedorov & Valen, 2020. "The electron affinity of astatine," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17599-2
    DOI: 10.1038/s41467-020-17599-2
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