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The electron affinity of astatine.

  • Leimbach D CERN, Geneva, Switzerland. davidleimbach@posteo.de.
  • Karls J Department of Physics, University of Gothenburg, Gothenburg, Sweden.
  • Guo Y Van Swinderen Institute for Particle Physics and Gravity, University of Groningen, Groningen, The Netherlands.
  • Ahmed R National Centre for Physics (NCP), Islamabad, Pakistan.
  • Ballof J CERN, Geneva, Switzerland.
  • Bengtsson L Department of Physics, University of Gothenburg, Gothenburg, Sweden.
  • Boix Pamies F CERN, Geneva, Switzerland.
  • Borschevsky A Van Swinderen Institute for Particle Physics and Gravity, University of Groningen, Groningen, The Netherlands.
  • Chrysalidis K CERN, Geneva, Switzerland.
  • Eliav E School of Chemistry, Tel Aviv University, Tel Aviv, Israel.
  • Fedorov D Petersburg Nuclear Physics Institute - NRC KI, Gatchina, Russia.
  • Fedosseev V CERN, Geneva, Switzerland.
  • Forstner O Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, Jena, Germany.
  • Galland N CEISAM, Université de Nantes, CNRS, Nantes, France.
  • Garcia Ruiz RF CERN, Geneva, Switzerland.
  • Granados C CERN, Geneva, Switzerland.
  • Heinke R Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany.
  • Johnston K CERN, Geneva, Switzerland.
  • Koszorus A KU Leuven, Instituut voor Kern- en Stralingsfysica, Leuven, B-3001, Belgium.
  • Köster U Institut Laue-Langevin, Grenoble, France.
  • Kristiansson MK Department of Physics, Stockholm University, Stockholm, Sweden.
  • Liu Y Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA.
  • Marsh B CERN, Geneva, Switzerland.
  • Molkanov P Petersburg Nuclear Physics Institute - NRC KI, Gatchina, Russia.
  • Pašteka LF Department of Physical and Theoretical Chemistry & Laboratory for Advanced Materials, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia.
  • Ramos JP SCK CEN, Research Centre Mol, Boeretang 200, 2400 Mol, Belgium.
  • Renault E CEISAM, Université de Nantes, CNRS, Nantes, France.
  • Reponen M Department of Physics, University of Jyväskylä, Jyväskylä, Finland.
  • Ringvall-Moberg A CERN, Geneva, Switzerland.
  • Rossel RE CERN, Geneva, Switzerland.
  • Studer D Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany.
  • Vernon A School of Physics and Astronomy, The University of Manchester, Manchester, UK.
  • Warbinek J Department of Physics, University of Gothenburg, Gothenburg, Sweden.
  • Welander J Department of Physics, University of Gothenburg, Gothenburg, Sweden.
  • Wendt K Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany.
  • Wilkins S CERN, Geneva, Switzerland.
  • Hanstorp D Department of Physics, University of Gothenburg, Gothenburg, Sweden.
  • Rothe S CERN, Geneva, Switzerland.
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  • 2020-08-01
Published in:
  • Nature communications. - 2020
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy
General Chemistry
English 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.
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  • English
Open access status
gold
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https://sonar.ch/global/documents/212556
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