Momentum imaging of electrons and recoil ions from anion–neutral interactions in a cryogenic ion storage ring

We have momentum-analyzed electrons and recoil ions in triple coincidence with projectiles neutralized in 300-keV <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi mathvariant="normal">S</a:mi><a:msup><a:mrow><a:mi mathvariant="normal">i</a:mi></a:mrow><a:mo>−</a:mo></a:msup><a:mo>+</a:mo><a:mi>Ar</a:mi></a:mrow></a:math> collisions. The experiment was performed at a cryogenic ion storage ring with an in-ring reaction microscope. Differential momentum distributions for detachment with simultaneous target ionization were obtained. At more than 15% of the detachment-only rate the ionization rate is surprisingly large. A correlated two-electron channel is found to be dominant. This is also unexpected because the projectile energy is well below the threshold for the correlated process.

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Publication Details

Journal
Physical Review Research
Published
2025-03-25
DOI
https://doi.org/10.1103/physrevresearch.7.l012082
Citations
3
Primary Topic
Atomic and Molecular Physics
Type
article
Field-Weighted Citation Impact
3.74
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article

Momentum imaging of electrons and recoil ions from anion–neutral interactions in a cryogenic ion storage ring

Florian Trost, Florian Grussie, O. Novotný, Alexander Dorn et al.
3 citations
Physical Review Research
Atomic and Molecular Physics
3.74
article

Momentum imaging of electrons and recoil ions from anion–neutral interactions in a cryogenic ion storage ring

Florian Trost, Florian Grussie, O. Novotný, Alexander Dorn, Thomas Pfeifer, David V. Chicharro, F. Herrmann, A. Wolf, H. Kreckel, Michael Schulz, M. Grieser, Weiyu Zhang, Robert Moshammer, C. D. Schröter
article en
3 citations

Abstract

We have momentum-analyzed electrons and recoil ions in triple coincidence with projectiles neutralized in 300-keV <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi mathvariant="normal">S</a:mi><a:msup><a:mrow><a:mi mathvariant="normal">i</a:mi></a:mrow><a:mo>−</a:mo></a:msup><a:mo>+</a:mo><a:mi>Ar</a:mi></a:mrow></a:math> collisions. The experiment was performed at a cryogenic ion storage ring with an in-ring reaction microscope. Differential momentum distributions for detachment with simultaneous target ionization were obtained. At more than 15% of the detachment-only rate the ionization rate is surprisingly large. A correlated two-electron channel is found to be dominant. This is also unexpected because the projectile energy is well below the threshold for the correlated process.

Physical Review ResearchVol. 7(1)
Missouri University of Science and Technology (US), Max Planck Institute for Nuclear Physics (DE)
Openalex Percentile: Top 8%
Atomic and Molecular Physics
3.74
DOIOpen Access PDFOpenAlex
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