The absolute differential oscillator strengths (DOS's) for the
photoabsorption of the Ne, Ar, and Xe atoms encapsulated in the C60β have
been evaluated using the time-dependent-density-functional-theory, which solves
the quantum Liouvillian equation with the Lanczos chain method. The
calculations are performed in the energy regions both inside and outside the
C60β giant resonance. The photoabsorption spectra of the atoms encaged in
the C60β demonstrate strong oscillations inside the energy range of the
C60β giant resonance. This type of oscillation cannot be explained by the
confinement resonance, but is due to the energy transfer from the C60β
valence electrons to the photoelectron through the intershell coupling