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Peter Bartl, Dr. Christian Leidlmair, Dr. Stephan Denifl, Prof. Dr. Paul Scheier and Prof. Dr. Olof Echt Cationic Complexes of Hydrogen with Helium ChemPhysChem 14

Version of Record online: 22 OCT 2012 | DOI: 10.1002/cphc.201200664

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Trapping helium on hydrogen: Helium nanodroplets are doped with hydrogen or deuterium and subsequently ionized by electron impact. Cationic complexes of Hx+ (x=1, 2, 3,…) with up to 30 helium atoms are identified in the high-resolution mass spectra. Pronounced anomalies in the size dependence of their abundance indicate particularly stable helium–hydrogen complexes (see picture).

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