  Collective bremsstrahlung of vector meson fields caused by mutual
deceleration of the colliding nuclei is considered within the time-dependent
Walecka theory. Excitation functions and rapidity distributions of particles
produced by this mechanism are calculated under some simplifying assumptions
about the space-time variation of the baryon current in a nuclear collision. In
the case of central Au+Au collisions the bremsstrahlung mechanism becomes
comparable with particle production in incoherent hadron--hadron collisions
above the AGS energies.
