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Mutual Neutralization of O^{-} with O^{+} and N^{+} at Subthermal Collision Energies

de Ruette, N ; Dochain, A ; Launoy, T ; Nascimento, R F ; Kaminska, M ; Stockett, M H ; Vaeck, N ; Schmidt, H T ; Cederquist, H ; Urbain, X

Physical review letters, 2018-08, Vol.121 (8), p.083401-083401, Article 083401 [Periódico revisado por pares]

United States: American Physical Society

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  • Título:
    Mutual Neutralization of O^{-} with O^{+} and N^{+} at Subthermal Collision Energies
  • Autor: de Ruette, N ; Dochain, A ; Launoy, T ; Nascimento, R F ; Kaminska, M ; Stockett, M H ; Vaeck, N ; Schmidt, H T ; Cederquist, H ; Urbain, X
  • Assuntos: Asymptotic methods ; Atomic states ; Collision dynamics ; Configurations ; Coupling ; Cross sections ; Electron transfer ; Energy spectra ; Kinetic energy ; Neutral atoms ; Nitrogen
  • É parte de: Physical review letters, 2018-08, Vol.121 (8), p.083401-083401, Article 083401
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: We have measured total absolute cross sections for the mutual neutralization (MN) of O^{-} with O^{+} and N^{+}. A fine resolution (of about 50 meV) in the kinetic energy spectra of the product neutral atoms allows unique identification of the atomic states participating in the mutual neutralization process. Cross sections and branching ratios have also been calculated down to 1 meV center-of-mass collision energy for these two systems, with a multichannel Landau-Zener model and an asymptotic method for the ionic-covalent coupling matrix elements. The importance of two-electron processes in one-electron transfer is demonstrated by the dominant contribution of a core-excited configuration of the nitrogen atom in N^{+}+O^{-} collisions. This effect is partially accounted for by introducing configuration mixing in the evaluation of coupling matrix elements.
  • Editor: United States: American Physical Society
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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