title: Formations of dumbbell C118 and C119 inside clusters of C60 molecules by collision with α particles.
abstract: We report highly selective covalent bond modifications in collisions between keV alpha particles and van der Waals clusters of C(60) fullerenes. Surprisingly, C(119)(+) and C(118)(+) are the dominant molecular fusion products. We use molecular dynamics simulations to show that C(59)(+) and C(58)(+) ions--effectively produced in prompt knockout processes with He(2+)--react rapidly with C(60) to form dumbbell C(119)(+) and C(118)(+). Ion impact on molecular clusters in general is expected to lead to efficient secondary reactions of interest for astrophysics. These reactions are different from those induced by photons.
authors.affiliation: Department of Physics, Stockholm University, S-106 91 Stockholm, Sweden. henning@fysik.su.se
authors.forename: H
authors.initials: H
authors.lastname: Zettergren
authors.forename: P
authors.initials: P
authors.lastname: Rousseau
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
authors.forename: F
authors.initials: F
authors.lastname: Seitz
authors.forename: T
authors.initials: T
authors.lastname: Chen
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authors.lastname: Gatchell
authors.forename: J D
authors.initials: JD
authors.lastname: Alexander
authors.forename: M H
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authors.lastname: Stockett
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authors.initials: J
authors.lastname: Rangama
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authors.lastname: Chesnel
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authors.lastname: Capron
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authors.lastname: Poully
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authors.lastname: Domaracka
authors.forename: A
authors.initials: A
authors.lastname: Méry
authors.forename: S
authors.initials: S
authors.lastname: Maclot
authors.forename: H T
authors.initials: HT
authors.lastname: Schmidt
authors.forename: L
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authors.lastname: Adoui
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authors.lastname: Alcamí
authors.forename: A G G M
authors.initials: AG
authors.lastname: Tielens
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authors.lastname: Martín
authors.forename: B A
authors.initials: BA
authors.lastname: Huber
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authors.lastname: Cederquist
mesh_terms: D000512:Alpha Particles; D002413:Cations, Divalent / Q000737:chemistry; D037741:Fullerenes / Q000737:chemistry*; D006371:Helium / Q000737:chemistry; D008958:Models, Molecular; D008970:Molecular Weight; D009010:Monte Carlo Method; D013816:Thermodynamics
chemical_list: D002413:Cations, Divalent; D037741:Fullerenes; D006371:Helium; C069837:fullerene C60