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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ew routes in the formation of positively charged fragments upon electron attachmen

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Author(s):
Mendes, M. [1] ; Nunes, A. [1] ; Pereira-da-Silva, J. [1] ; Rodrigues, R. [1] ; Araujo, J. M. M. [2] ; de Sillva, F. Ferreira [1] ; Cornetta, L. M. [3]
Total Authors: 7
Affiliation:
[1] Univ Nova Lisboa, NOVA Sch Sci & Technol, CEFITEC, Dept Fis, P-2829516 Caparica - Portugal
[2] Univ Nova Lisboa, Fac Ciencias & Tecnol, LAQV, REQUIMTE, Dept Quim, P-2829516 Caparica - Portugal
[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: EUROPEAN PHYSICAL JOURNAL D; v. 76, n. 2 FEB 2022.
Web of Science Citations: 0
Abstract

Electron-driven reactions of CF3CH2F have been studied focusing on the formation of the parent cation, CF3+ and CH2F+ (C-C bond cleavage) fragments as a function of the electron energy. For the three referred cations, an unpredicted shoulder structure is observed in the ion yield between 12 and 20 eV, indicating a resonant process (electron attachment). Viewing the observations as the result of a competition between the expected dissociative electron ionization and a dissociative electron attachment, we propose a new route where the formation of the transient anion, under two autodetachments, ultimately triggers the formation of positively charged fragments. The reaction e (-) + AB -> AB(-){*} -> AB{*} + e(-) -> A(+) B + 2e(-) is supported by both experimental data and scattering calculations. (AU)

FAPESP's process: 20/04822-9 - Breaking matter complexity with resonant inelastic x-ray scattering: the role of different conformers and their respective nuclear dynamics
Grantee:Lucas Medeiros Cornetta
Support Opportunities: Scholarships in Brazil - Post-Doctoral