PLASMA EMISSION DEVICE, AND ELECTROMAGNETIC WAVE GENERATOR EMPLOYED IN SAME

摘要

A plasma emission device 1 in an embodiment includes: an electromagnetic wave generator 2; a waveguide 4 that transmits an electromagnetic wave emitted from the electromagnetic wave generator 2; an antenna 5 that receives the electromagnetic wave transmitted through the waveguide 4; an electromagnetic wave focuser 6 that is irradiated with the electromagnetic wave from the antenna 5; and an electrodeless bulb 7 disposed in the electromagnetic wave focuser 6. A light-emitting material filled in the electrodeless bulb 7 is excited by the electromagnetic wave focused by the electromagnetic wave focuser 6 to perform plasma emission. The electromagnetic wave generator 2 includes a cathode part and an anode part A maximum output efficiency of the electromagnetic wave to be generated with an input power of 700 W or less is 70% or more.