  Semiclassical description, based on electrostatics and Thomas-Fermi model is
applied here to calculate dimensions of the electronic shell of a fullerene
molecule and a nanotube. The internal radius of the electronic shell of a
fullerene molecule, calculated within the framework of the model is 0.2808 nm.
The external radius is 0.4182 nm. The experimental values are 0.279 nm and
0.429 nm correspondingly. This shows that semiclassical approach provides
rather good description of the dimensions of the electronic shell in a
fullerene molecule. Two types of dipole oscillations in a fullerene molecule
are considered and their frequencies are calculated. Similar calculations are
performed for a nanotube also. For a nanotube with a radius of the cylinder of
the ions, Rn = 0.7 nm, the internal radius of the electronic shell, calculated
within the framework of the model is 0.577 nm. The external radius is 0.816 nm.
Three types of dipole oscillations in nanotube are considered and their
frequencies are calculated.
