State-resolved mutual neutralization of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:none/><mml:mo>+</mml:mo><mml:mprescripts/><mml:none/><mml:mn>16</mml:mn></mml:mmultiscripts></mml:math> with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">H</mml:mi><mml:none/><mml:mo>−</mml:mo><mml:mprescripts/><mml:none/><mml:mn>1</mml:mn></mml:mmultiscripts></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">H</mml:mi><mml:none/><mml:mo>−</mml:mo><mml:mprescripts/><mml:none/><mml:mn>2</mml:mn></mml:mmultiscripts></mml:math> at collision energies below 100 meV-Reference-Cited by-同舟云学术

State-resolved mutual neutralization of O+16 with H−1 and H−2 at collision energies below 100 meV

Published:2024-05-22 Issue:5 Volume:109 Page:
ISSN:2469-9926
Container-title:Physical Review A
language:en
Short-container-title:Phys. Rev. A

Author:

Schmidt-May Alice F.¹^ORCID,Barklem Paul S.²^ORCID,Grumer Jon²^ORCID,Amarsi Anish M.²^ORCID,Björkhage Mikael¹,Blom Mikael¹^ORCID,Dochain Arnaud¹,Ji MingChao¹^ORCID,Martini Paul¹^ORCID,Reinhed Peter¹,Rosén Stefan¹,Simonsson Ansgar¹^ORCID,Zettergren Henning¹^ORCID,Cederquist Henrik¹^ORCID,Schmidt Henning T.¹^ORCID

Affiliation:

1. Stockholm University

2. Uppsala University

Abstract

We measured the product-state distribution and its dependence on the hydrogen isotope for the mutual neutralization between O+16 and H−1,2 at the double electrostatic ion-beam storage ring DESIREE for center-of-mass collision energies below 100 meV. We find at least six product channels into ground-state hydrogen and oxygen in different excited states. The majority of oxygen products populate terms corresponding to 2s22p3(4S∘)4s with S∘5 as the main reaction product. We also observe product channels into terms corresponding to 2s22p3(4S)3p. Collisions with the heavier hydrogen isotope yield a branching into these lower excited states smaller than collisions with H−1. The observed reaction products agree with the theoretical predictions. The detailed branching fractions, however, differ between the theoretical results, and none of them fully agree with the experiment.

Published by the American Physical Society

2024

Funder

Vetenskapsrådet

Knut och Alice Wallenbergs Stiftelse

Publisher

American Physical Society (APS)

Link

http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevA.109.052820/fulltext

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