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Dissociation dynamics of transient anion formed via electron attachment to sulfur dioxide

Gope, K., Prabhudesai, V.S., Mason, Nigel, Krishnakumar, E. (2017) Dissociation dynamics of transient anion formed via electron attachment to sulfur dioxide. Journal of Chemical Physics, 147 (5). Article Number 054304. ISSN 0021-9606. (doi:10.1063/1.4994899) (KAR id:74645)


We report the molecular dynamics of dissociative electron attachment to sulfur dioxide (SO2) by measuring the momentum distribution of fragment anions using the velocity slice imaging technique in the electron energy range of 2-10 eV. The S- channel results from symmetric dissociation which exhibits competition between the stretch mode and bending mode of vibration in the excited parent anion. The asymmetric dissociation of parent anions leads to the production of O- and SO- channels where the corresponding neutral fragments are formed in their ground as well as excited electronic states. We also identify that internal excitation of SO- is responsible for its low yield at higher electron energies.

Item Type: Article
DOI/Identification number: 10.1063/1.4994899
Uncontrolled keywords: Dissociation, Electron energy levels, Electrons, Imaging techniques, Ions, Molecular dynamics, Negative ions, Sulfur, Sulfur dioxide, Dissociation dynamics, Dissociative electron attachment, Electron attachment, Electron energy range, Excited electronic state, Momentum distributions, Neutral fragments, Velocity slice imaging, Photodissociation
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Depositing User: Nigel Mason
Date Deposited: 28 Jun 2019 12:38 UTC
Last Modified: 09 Dec 2022 05:47 UTC
Resource URI: (The current URI for this page, for reference purposes)

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