Thin-slot formalism in three-dimensional computations of electromagnetic waves interaction with perfectly conductive solids

Three-dimensional method of computing of currents and charges induced by electromagnetic impulse on solids of complicated shape was supplemented by method of computing of penetration of electromagnetic waves through narrow slots. Computations of electromagnetic impulse incidence on the infinitesimal plane with the slot and on the box with the slot and test computation of stationary interaction of periodic wave with the plate were fulfilled. Modification of thin slot formalism for two perpendicular plates was applied for computations with a slot between the cylinder and the plane.