PLASMA GENERATION DEVICE AND INTERNAL COMBUSTION ENGINE

In the plasma generation device 30 that generates electromagnetic wave plasma by emitting electromagnetic waves in a target space 51, the electromagnetic wave plasma is generated in a plurality of locations with a simple configuration and relatively low electromagnetic wave energy. The plasma generation device 30 is provided with an antenna 36 that emits electromagnetic waves supplied from an electromagnetic wave generator 33 in the target space 51, a discharger 35 that forcibly discharges free electrons from gas molecules in the target space 51, and an electric field concentration member 40 that concentrates electric field of the electromagnetic wave emitted from the antenna 36. The electric field concentration member 40 is arranged in non-contact relationship with the antenna 36. The plasma generation device 30 causes the discharger 35 to discharge free electrons and the antenna 36 to emit electromagnetic waves, thereby generating electromagnetic wave plasma in the vicinity of the antenna 36 and in the vicinity of the electric field concentration member 40.