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High-precision electron affinity of oxygen

Kristiansson, Moa K., 1989- (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Chartkunchand, Kiattichart (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.;RIKEN, Atom Mol & Opt Phys Lab, Saitama, Japan.
Eklund, Gustav, 1990- (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
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Hole, O. M. (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Källberg, Anders, 1954- (author)
Stockholms universitet,Fysikum,Aarhus Univ, Dept Phys & Astron, Aarhus, Denmark.,Stockholm Univ, Dept Phys, Stockholm, Sweden.
de Ruette, Nathalie (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Kamińska, Magdalena (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Punnakayathil, Najeeb (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Navarro-Navarrete, José E. (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Sigurdsson, S. (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Grumer, Jon (author)
Uppsala universitet,Teoretisk astrofysik
Simonsson, Ansgar (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Björkhage, Mikael (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Rosén, Stefan (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Reinhed, Peter, 1964- (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Blom, Mikael (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Kallberg, A. (author)
Alexander, John D. (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Cederquist, Henrik (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Zettergren, Henning (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Schmidt, Henning T. (author)
Stockholms universitet,Fysikum,Stockholm Univ, Dept Phys, Stockholm, Sweden.
Hanstorp, Dag, 1960 (author)
Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Univ Gothenburg, Dept Phys, Gothenburg, Sweden.
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 (creator_code:org_t)
2022-10-07
2022
English.
In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 13:1
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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 O-16. High-precision measurements are useful to find isotopic shifts and electron correlation. Here the authors measure electron affinity and hyperfine splitting of atomic oxygen with higher precision than previous studies.

Subject headings

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Keyword

negative-ions
ab-initio
photodetachment
photodissociation
dynamics
shift
atoms
1st
Science & Technology - Other Topics

Publication and Content Type

ref (subject category)
art (subject category)

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