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 R04: Antimatter and Electron Collisions
2:00 PM–3:48 PM,
Thursday, June 6, 2024
Room: 201BC
Chair: Sandra Ward Quintanilla, University of North Texas
Abstract: R04.00002 : 02.04 FOCUS SESSION: Antimatter and electron collisionsDissociation dynamics of transient carboxylic acid anions formed by electron attachment*
2:30 PM–3:00 PM
Presenter:
Daniel S Slaughter
(Lawrence Berkeley National Laboratory)
Authors:
Daniel S Slaughter
(Lawrence Berkeley National Laboratory)
Mahmudul Hasan
(University of Nebraska - Lincoln)
Thorsten Weber
(Lawrence Berkeley National Laboratory)
Martin Centurion
(University of Nebraska - Lincoln)
Acetic acid, isolated in the gas phase, produces many reactive species by dissociative electron attachment. Such reactions proceed via an electronic shape resonance at low attachment energies, or electronic Feshbach resonances at higher energies. In this work we focus on the rich information provided by the momentum of the H- or D- anions produced by breaking specific bonds, namely the hydroxyl (O-H or O-D) and and methyl (C-H or C-D) bonds. We make direct comparisons between a series of Feshbach resonances in the two simplest carboxylic acids, formic acid (Refs 1-2) and acetic acid, to understand the dynamics underlying anion and radical formation.
*Work supported by the US DOE Chemical Sciences, Geosciences and Biosciences Division of the Office of Basic Energy Sciences, in the Office of Science.
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