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Storage-ring study of the mutual neutralization of N plus with O minus
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- Poline, Mathias (author)
- Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
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- Rosen, Stefan (author)
- Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
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- Ji, MingChao (author)
- Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.
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- Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden Catholic Univ Louvain, Inst Condensed Matter & Nanosci, B-1348 Louvain La Neuve, Belgium. (creator_code:org_t)
- American Physical Society, 2022
- 2022
- English.
- In: Physical Review A: covering atomic, molecular, and optical physics and quantum information. - : American Physical Society. - 2469-9926 .- 2469-9934. ; 105:6
- Journal article (peer-reviewed)
Abstract
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- The double ion storage ring DESIREE has been used in combination with position- and time-sensitive detectors to study the mutual neutralization of N+ with O- at 40 meV collision energy. Several previously unassigned spectral features observed in a recent single-pass merged-beams experiment at 7 meV collision energy [Phys. Rev. Lett. 121, 083401 (2018)], were also observed in the present experiment. It was found that neutralization channels of the first metastable state of the cation [N+(1D), τ≈ 256 s] could explain the majority of these features, while the second metastable state [N+(1S), τ≈ 0.9 s] was not found to contribute significantly. The branching ratios into the different electronically excited states of N were determined and found to be in good agreement between the two experiments. Theoretical calculations using the multichannel Landau-Zener model were found to yield good results for a number of channels, but could not describe some observed contributions, possibly due to the presence of other processes not accounted for in the model.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- Poline, Mathias
- Rosen, Stefan
- Ji, MingChao
- Simonsson, Ansga ...
- Reinhed, Peter
- Larsson, Mats
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- Schmidt, Henning ...
- Thomas, Richard ...
- Dochain, Arnaud
- Urbain, Xavier
- Grumer, Jon
- Barklem, Paul
- Ard, Shaun G.
- Shuman, Nicholas ...
- Viggiano, Albert ...
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- NATURAL SCIENCES
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- Uppsala University
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