Issue 6, 2023

Electronic effects in the dissociative ionisation of pyrene clusters

Abstract

We present a combined experimental and theoretical study on the dissociative ionisation of clusters of pyrene. We measured the experimental appearance energies in the photon energy range 7.2–12.0 eV of the fragments formed from neutral monomer loss for clusters up to the hexamer. The results obtained show a deviation from statistical dissociation. From electronic structure calculations, we suggest that the role of excited states must be considered in the interpretation of experimental results, even in these relatively large systems. Non-statistical effects in the dissociative ionization process of polycyclic aromatic hydrocarbon (PAH) clusters may have an impact on the assessment of mechanisms determining the stability of these clusters in astrophysical environments.

Graphical abstract: Electronic effects in the dissociative ionisation of pyrene clusters

Supplementary files

Article information

Article type
Paper
Submitted
05 Dec. 2022
Accepted
13 Janv. 2023
First published
25 Janv. 2023

Phys. Chem. Chem. Phys., 2023,25, 4501-4510

Electronic effects in the dissociative ionisation of pyrene clusters

G. A. Garcia, L. Dontot, M. Rapacioli, F. Spiegelman, P. Bréchignac, L. Nahon and C. Joblin, Phys. Chem. Chem. Phys., 2023, 25, 4501 DOI: 10.1039/D2CP05679H

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