Dielectric barrier diescharge excimer light source

摘要

An anode electrode 10 is composed of a straight elongated cylindrical body, and the outer periphery of the cylindrical body is covered with a dielectric body 12 . Further, a cathode portion 20 has a straight semicylindrical shape. A cathode 25 surrounds the anode, and the anode and cathode are disposed parallel to each other in the longitudinal direction. Further, the cathode comprises a cathode wire group 16 . Both ends of the cathode wire group are fixed to both ends 20 D in the longitudinal direction of the semicylindrical body constituting the cathode portion, so that a plurality of wires become parallel to each other. A reflective surface for reflecting irradiation in a vacuum ultraviolet region is formed on the surface 20 S of the cathode portion at the side facing the anode.