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Li Z, Milosavljević AR, Carmichael I, et al. Characterization of Neutral Radicals from a Dissociative Electron Attachment Process. Phys Rev Lett. 2017;119(5):053402doi: 10.1103/PhysRevLett.119.053402.
Li, Z., Milosavljević, A. R., Carmichael, I., & Ptasinska, S. (2017). Characterization of Neutral Radicals from a Dissociative Electron Attachment Process. Physical review letters, 119(5), 053402. https://doi.org/10.1103/PhysRevLett.119.053402
Li, Zhou, et al. "Characterization of Neutral Radicals from a Dissociative Electron Attachment Process." Physical review letters vol. 119,5 (2017): 053402. doi: https://doi.org/10.1103/PhysRevLett.119.053402
Li Z, Milosavljević AR, Carmichael I, Ptasinska S. Characterization of Neutral Radicals from a Dissociative Electron Attachment Process. Phys Rev Lett. 2017 Aug 04;119(5):053402. doi: 10.1103/PhysRevLett.119.053402. Epub 2017 Aug 01. PMID: 28949760.
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Phys Rev Lett. 2017 Aug 04;119(5):053402. doi: 10.1103/PhysRevLett.119.053402. Epub 2017 Aug 01.

Characterization of Neutral Radicals from a Dissociative Electron Attachment Process.

Physical review letters

Zhou Li, Aleksandar R Milosavljević, Ian Carmichael, Sylwia Ptasinska

Affiliations

  1. Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, USA.
  2. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA.
  3. SOLEIL, l'Orme des Merisiers, St. Aubin, BP48, 91192 Gif sur Yvette Cedex, France.

PMID: 28949760 DOI: 10.1103/PhysRevLett.119.053402

Abstract

Despite decades of gas-phase studies on dissociative electron attachment (DEA) to various molecules, as yet there has been no direct detection and characterization of the neutral radical species produced by this process. In this study, we performed stepwise electron spectroscopy to directly measure and characterize the neutrals produced upon zero-electron-energy DEA to the model molecule, carbon tetrachloride (CCl_{4}). We observed the direct yield of the trichloromethyl radical (CCl_{3}^{·}) formed by DEA to CCl_{4} and measured the appearance energies of all the other neutral species. By combining these experimental findings with high-level quantum chemical calculations, we performed a complete analysis of both the DEA to CCl_{4} and the subsequent electron-impact ionization of CCl_{3}^{·}. This work paves the way toward a complete experimental characterization of DEA processes, which will lead to a better understanding of the low-energy electron-induced formation of radical species.

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