Abstract
The differential generalized oscillator strengths (GOS's) for ionization of the s-subshells of the He and Ne atoms encapsulated inside a fullerene, C60 cage, along with the single differential cross sections for ionization by fast electrons, are calculated. It is shown that the modulation of the wave function of the ejected electron caused by the interference between the direct ejection and the waves scattered by the fullerene shell results in confinement resonances in the GOS's and the resulting impact ionization cross sections. When the energy transfer to the target is close to that of the giant plasmon resonance in C60, the interchannel interaction of the atomic ionization channels with the C60 ionization channels significantly influences the cross section for electron impact ionization of the confined atom.
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