Studies are made on electromagnetic field excitation by a charged particle bunch, entering a half infinite metal wave-guide, filled up by a dielectric material. The wave-guide end-face through which the bunch comes in is closed off by a metal wall. Such situations are considered when the Vavilov-Cherenkov radiation emission condition is fulfilled and when this radiation emission is absent. Using a method, employed earlier in the study of electromagnetic signal propagation in the ionosphere, precise analytical expressions are obtained for the fields, containing the Lommel function from two variables. Excited field spatial pictures are presented, as obtained via numeric calculations for different values of the bunch energy and kind shape as well as permittivity. The boundary influence is studied on the wake-field excitation by a resonance bunch chain. It is shown that oscillations with a broad are excited in the semi-bounded wave-guide in the Cherenkov resonance absence.