Ionization and fragmentation of solid C{sub 60} by femtosecond laser ablation

Journal Article · Wed Feb 14 04:00:00 EST 2007 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.2565642· OSTI ID:20991218

Kobayashi, T; Kato, T; Matsuo, Y; Kurata-Nishimura, M; Kawai, J; Hayashizaki, Y ^[1]

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1. Discovery Research Institute, RIKEN, 2-1 Hirosawa, Saitama 351-0198 (Japan)

Ionization and fragmentation of solid C{sub 60} dispersed on a silicon plate are investigated by femtosecond laser ablation. Bimodal mass distribution with large fragment ions C{sub 60-2n}{sup +} (0{<=}n{<=}11) and small fragment ions C{sub n}{sup +} (13{<=}n{<=}28), formation of dimer ion (C{sub 60}){sub 2}{sup +}, and delayed ionization of C{sub 60} have been observed as reported in gas phase experiments with nanosecond laser excitation. Metastable dissociation of small fragment ions C{sub n}{sup +} has been observed for the first time, which suggests different structures of fragment ions compared with those of well-studied carbon cluster ions. From these observations, strong coupling of laser energy to electronic degrees of freedom of solid C{sub 60} has been revealed for femtosecond laser ablation as compared with excitation in the gas phase.

• OSTI ID: 20991218
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 6 Vol. 126; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ABLATION
DEGREES OF FREEDOM
DISSOCIATION
EXCITATION
FRAGMENTATION
FULLERENES
ION PAIRS
IONS
LASERS
MASS DISTRIBUTION
PHOTOIONIZATION
PHOTOLYSIS
STRONG-COUPLING MODEL