Electromagnetic head waves (Q2639257)

This paper demonstrates the emergence of electromagnetic head waves emitted from an impulsive line source near a plane boundary separating two half-spaces. The demonstration is accomplished by developing appropriate closed form solutions to wave equations. These waves are of physical interest since a head wave in a plane stratified medium is a pulsed radiation that, by travelling in high velocity layers, reaches an observation point before the arrival time of an associated reflected pulse or even before the direct pulse.