Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session Y02: HOT TOPICS
10:30 AM–12:30 PM,
Friday, June 7, 2024
Room: Ballroom C
Chair: Gretchen Campbell, Joint Quantum Institute, NIST and UMD
Abstract: Y02.00003 : Probing molecular mutual neutralization reactions of atmospheric importance using the ion storage facility DESIREE*
11:30 AM–12:00 PM
Presenter:
Richard D Thomas
(Stockholm University)
Authors:
Richard D Thomas
(Stockholm University)
Mathias Poline
(Stockholm University)
Arnaud Dochain
(Stockholm University)
Stefan Rosén
(Stockholm University)
MingChao Ji
(Stockholm University)
Peter Reinhed
(Stockholm University)
Ansgar Simonsson
(Stockholm University)
Nick S Shuman
(Air Force Research Laboratory)
Shaun G Ard
(Air Force Research Laboratory)
Albert A Viggiano
(Air Force Research Laboratory)
Mats L Larsson
(Stockholm Univ)
Henning T Schmidt
(Stockholm University)
Henning Zettergren
(Stockholm University)
Historically, it was only possible to study the overall reactivity of MN reactions, mostly in flow tubes, though some beams experiments are reported. Only with the advent of new techniques, i.e., combining merged ion beams with coincident product imaging, as at DESIREE [1-7], can detailed product information and dynamics be derived, i.e., only in early 2024 was the first final-state distributions and reaction dynamics of MN reactions involving molecular ions reported [6,7].
I focus on MN relevant to atmospheric plasmas and phenomenon such as Sprites, looking at reactions involving atomic and molecular oxygen and nitrogen ions. Starting with O- + NO+ [6], to O- + O2+ & O- + N2+, to demonstrate the power of these techniques to elucidate fractionation into two- and three-body product channels and unravel effects of rovibrational energy on the reaction.
[1] R. D. Thomas et al., Rev. Sci. Instrum. 82, 065112 (2011)
[2] H. T. Schmidt et al., Rev. Sci. Instrum. 84, 055115 (2013)
[3] H. T. Schmidt et al., Phys. Rev. Lett. 119, 073001 (2017)
[4] M. Poline et al., Phys. Chem. Chem. Phys. 23, 24607 (2021)
[5] M. Poline et al., Phys. Rev. A, 105, 062825 (2022)
[6] M. Poline et al., Phys. Rev. Lett. 132, 023001 (2024)
[7] A. Bogot et al., Science 383, 285 (2024)
*This material is based upon work supported by the Air Force Office of Scientific Research under award number FA9550-19-1-7012. This work was performed at the Swedish National Infrastructure, DESIREE (Swedish Research Council Contract No. 2017-00621 and 2021-00155). The AFRL contribution was supported by the Air Force Office of Scientific Research under AFOSR-22RVCOR009
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