  The spatio-temporal structure of the bulk wakefields excited by a
relativistic electron bunch in plasma of semiconductors and semimetals is
studied. It is shown that these wakefield consists of the field of longitudinal
plasmons and Cherenkov electromagnetic radiation, which is a set of eigen
electromagnetic waves of the semiconductor or semimetal waveguide. A branch of
the surface plasmons appears in a waveguide with an axial vacuum channel. The
process of wake excitation of the surface plasmons by the relativistic electron
bunch is also investigated. The intensity of the excited wake surface wave is
determined.

Plasma Physics;Accelerator Physics