Bonn 2000 – wissenschaftliches Programm

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MO: Molekülphysik

MO 17: Fullerene (gemeinsam mit FV Atomphysik)

MO 17.8: Vortrag

Donnerstag, 6. April 2000, 15:45–16:00, HS VIII

Mass Spectra of Metal-Doped Carbon and Fullerene Clusters M_xC_n<120 (M= Ce, Gd; x = 1,2) — •R. Klingeler, P.S. Bechthold, M. Neeb, and W. Eberhardt — Forschungszentrum J"ulich GmbH, Institut f"ur Festk"orperforschung, 52425 J"ulich

We present mass spectra of metal-doped carbon cluster cations M_xC_n⁺ (M=Ce, Gd; x=1,2; n*120) produced in a high frequency laser evaporation source (100 Hz) which is designed to deposit mass selected gas phase cluster ions onto a substrate under UHV conditions. The clusters are mass selected by a magnetic field deflector and are detected by a secondary electron amplifier behind the exit slit. The mass spectra reveal the onset of endohedrally doped fullerenes from which the smallest possible cage size can be deduced.