Formation of Doubly and Triply Charged Fullerene Dimers in Superfluid Helium Nanodroplets

Sequential ionization of fullerene cluster ions (C_{60})_{n}^{+} within multiply charged helium nanodroplets leads to the intriguing phenomenon of forming and stabilizing doubly and triply charged fullerene oligomers. While the formation of doubly charged dimers (C_{60})_{2}^{2+} has been predicted...

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Bibliographic Details
Published in:Physical review letters 2024-07, Vol.133 (2), p.023001, Article 023001
Main Authors: Ganner, Lisa, Bergmeister, Stefan, Lorenz, Lucas, Ončák, Milan, Scheier, Paul, Gruber, Elisabeth
Format: Article
Language:English
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Summary:Sequential ionization of fullerene cluster ions (C_{60})_{n}^{+} within multiply charged helium nanodroplets leads to the intriguing phenomenon of forming and stabilizing doubly and triply charged fullerene oligomers. While the formation of doubly charged dimers (C_{60})_{2}^{2+} has been predicted in earlier studies, the observation of even triply charged ones (C_{60})_{2}^{3+} is highly surprising. This remarkable resilience against Coulomb explosion is achieved through efficient cooling within the superfluid environment of helium nanodroplets and a sequential ionization scheme that populates covalently bound or physisorbed fullerene dimers. Calculations support the stability of four differently bonded (C_{60})_{2}^{2+} and (C_{60})_{2}^{3+} isomers and predict a low Coulomb barrier (
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/PhysRevLett.133.023001