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Low energy electron impact resonances of anthracene probed by 2D photoelectron imaging of its radical anion

Mensa-Bonsu, Golda; Lietard, Aude; Tozer, David J.; Verlet, Jan R.R.

Low energy electron impact resonances of anthracene probed by 2D photoelectron imaging of its radical anion Thumbnail


Authors

Golda Mensa-Bonsu

Aude Lietard

David J. Tozer



Abstract

Electron-molecule resonances of anthracene were probed by 2D photoelectron imaging of the corresponding radical anion up to 3.7 eV in the continuum. A number of resonances were observed in both the photoelectron spectra and angular distributions, and most resonances showed clear autodetachment dynamics. The resonances were assigned using density functional theory calculations and are consistent with the available literature. Competition between direct and autodetachment, as well as signatures of internal conversion between resonances, was observed for some resonances. For the 12B2g resonance, a small fraction of population recovers the ground electronic state as evidenced by thermionic emission. Recovery of the ground electronic state offers a route of producing anions in an electron–molecule reaction; however, the energy at which this occurs suggests that anthracene anions cannot be formed in the interstellar medium by electron capture through this resonance.

Citation

Mensa-Bonsu, G., Lietard, A., Tozer, D. J., & Verlet, J. R. (2020). Low energy electron impact resonances of anthracene probed by 2D photoelectron imaging of its radical anion. The Journal of Chemical Physics, 152(17), Article 174303. https://doi.org/10.1063/5.0007470

Journal Article Type Article
Acceptance Date Apr 12, 2020
Online Publication Date May 4, 2020
Publication Date May 7, 2020
Deposit Date May 13, 2020
Publicly Available Date May 4, 2021
Journal Journal of Chemical Physics
Print ISSN 0021-9606
Electronic ISSN 1089-7690
Publisher American Institute of Physics
Peer Reviewed Peer Reviewed
Volume 152
Issue 17
Article Number 174303
DOI https://doi.org/10.1063/5.0007470

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Copyright Statement
© 2020 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Mensa-Bonsu, Golda, Lietard, Aude, Tozer, David J. & Verlet, Jan R. R. (2020). Low energy electron impact resonances of anthracene probed by 2D photoelectron imaging of its radical anion. The Journal of Chemical Physics 152(17): 174303 and may be found at https://doi.org/10.1063/5.0007470





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