  The acceleration of an spheroidal metal nanoparticle in an irradiation field
with a frequency close to the surface plasmon vibration has been considered.
Under the action of radiation pressure, the polarizability for nonspherical
particle becomes a tensor quantity. The analytical expressions for the
resonance acceleration components for the cases of plane-polarized and
circularly polarized light have been derived. We have demonstrated that the
resonance acceleration can depend substantially on the shape of a metal
nanoparticle and its orientation with respect to the directions of light
propagation and the light polarization.
