  It is demonstrated by the example of the Xe atom stuffed inside the C60
fullerene, that the so-called confinement resonances in 4d subshell strongly
affect the photoionization cross-section of outer 5p and subvalent 5s electrons
near 4d ionization threshold. It is a surprise that these narrow inner 4d shell
resonances are not smeared out in the outer shell photoionization
cross-section. On the contrary; the inner shell resonances affect the outer
cross-section by enhancing them enormously. Close to its own photoionization
thresholds, 5p and 5s photoionization cross-sections of Xe endohedral are
dominated by their own confinement resonances greatly affected by the
amplification of the incoming radiation intensity due to polarization by it of
the C60 electron shell. In between 4d and 5p thresholds, the effect of 4d is
becoming stronger while own resonances of 5p and 5s are becoming much less
important.
