Regular Article – Clusters and Nanostructures
Dissociative electron attachment to c-C4F8 molecules and clusters
Department of Experimental Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in Bratislava, Mlynská Dolina F2, 84248, Bratislava, Slovakia
Accepted: 9 March 2023
Published online: 14 April 2023
The electron attachment and dissociative electron attachment to gas phase octafluorocyclobutane (c-C4F8) and to its clusters have been measured. The majority of the gas phase products were already reported earlier and have been successfully confirmed in this work. In addition, two new fragments c-C4F7− and C2F5− have been detected at electron energies ∼3.6 eV and 3.1 eV respectively. The parent molecular ion c-C4F8− has been detected not only at the expected ∼0 eV energy, but also with a weak resonance at ∼0.66 eV as well. Contrary to gas phase measurements, the electron attachment to c-C4F8 molecular clusters has been measured for the first time. The dominant ionic products at electron energies ∼0 eV are the monomer, dimer and trimer of ((c-C4F8)n=0,1,2·c-C4F8)−, ((c-C4F8)n=0,1,2·c-C4F7)− and ((c-C4F8)n=0,1,2·F)−. The higher energy resonances at ∼4 eV have been associated with the metastable c-C4F8− ion as well as with possible electron scavenging processes in clusters. Finally, above 8 eV the core-excited electron attachment has been observed.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.