Crossed-Beam Experiment for the Scattering of Low Energy Electrons from Gas Phase C_<60>

概要

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Elastic electron scattering spectra of C_<60> in the vapor phase were recorded from 1 to 11.5 eV and scattering angles from 30°to 90°. Electron energy loss spectra are given for a loss from 1 to 55 eV at impact energies of 50 and 100 eV (5°). They confirm the known optically allowed transitions and resolve the ≈ 6 eV π-electron plasmon-peak at least into four steps at 5.8, 6.1, 6.3, and 6.5 eV. A small peak of width 2 eV has been found at 28.3 eV, the position of the "σ+π-plasmon" in solid films. Vibrational excitations were recorded at 7 eV for angles from 20° to 60° with a resolution of 34 meV and show two peaks at 0.06 to 0.11 eV and at 0.15 to 0.20 eV both of which contain optically forbidden transitions. The elastic DCS at 7 eV and a scattering angle of 30° is estimated to be of order 5×10^<-14> cm^2/sr.
社団法人日本物理学会の論文
1994-02-15