  The kinetic approach is applied to develop the Drude-Sommerfeld model for
studying of the optical and electrical transport properties of spheroidal
metallic nanoparticles, when the free electron path is much greater than the
particle size. For the nanoparticles of an oblate or a prolate spheroidal shape
there has been found the dependence of the dielectric function and the electric
conductivity on a number of factors, including the frequency, the particle
radius, the spheroidal aspect ratio and the orientation of the electric field
with respect to the particle axes. The oscillations of the real and imaginary
parts of the dielectric permeability have been found with increasing of
particle size at some fixed frequencies or with frequency increasing at some
fixed radius of a nanoparticle. The results obtained in kinetic approach are
compared with the known from the classical model.
