  We investigate collision of a point particle and an infinitely thin planar
domain wall interacting gravitationally within the linearized gravity in
Minkowski space-time of arbitrary dimension. In this setting we are able to
describe analytically the perforation of the wall by an impinging particle,
showing that it is accompanied by excitation of the spherical shock branon wave
propagating outwards with the speed of light. Formally, the shock wave is a
free solution of the branon wave equation which has to be added to ensure the
validity of the retarded solution at the perforation point. Physically, the
domain wall gets excited due to the shake caused by an instantaneous change of
sign of the repulsive gravitational force. This effect is shown to hold, in
particular, in four space-time dimensions, being applicable to the problem of
cosmological domain walls.
