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dc.contributor.authorKurzthaler, Thomas-
dc.contributor.authorRasul, Bilal-
dc.contributor.authorKuhn, Martin-
dc.contributor.authorLindinger, Albrecht-
dc.contributor.authorScheier, Paul-
dc.contributor.authorEllis, Andrew M.-
dc.identifier.citationJournal of Chemical Physics, 2016, 145 (6), 064305en
dc.description.abstractWe report the first experimental study of the attachment of multiple foreign atoms to a cationic polycyclic aromatic hydrocarbon (PAH). The chosen PAH was coronene, C24H12, which was added to liquid helium nanodroplets and then subjected to electron bombardment. Using mass spectrometry, coronene cations decorated with helium atoms were clearly seen and the spectrum shows peaks with anomalously high intensities (“magic number” peaks), which represent ion-helium complexes with added stability. The data suggest the formation of a rigid helium layer consisting of 38 helium atoms that completely cover both faces of the coronene ion. Additional magic numbers can be seen for the further addition of 3 and 6 helium atoms, which are thought to attach to the edge of the coronene. The observation of magic numbers for the addition of 38 and 44 helium atoms is in good agreement with a recent path integral Monte Carlo prediction for helium atoms on neutral coronene. An understanding of how atoms and molecules attach to PAH ions is important for a number of reasons including the potential role such complexes might play in the chemistry of the interstellar medium.en
dc.publisherAIP Publishingen
dc.rightsCopyright © 2016 AIP Publishing. Deposited with reference to the publisher’s archiving policy available on the SHERPA/RoMEO website.en
dc.subjectScience & Technologyen
dc.subjectPhysical Sciencesen
dc.subjectChemistry, Physicalen
dc.subjectPhysics, Atomic, Molecular & Chemicalen
dc.subjectHE-4 FILMSen
dc.titleThe adsorption of helium atoms on coronene cationsen
dc.typeJournal Articleen
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERINGen
pubs.organisational-group/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Chemistryen
Appears in Collections:Published Articles, Dept. of Chemistry

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