Patent ID: 7271401
Filing Date: 2007-09-18
Classification: B82Y,G03F,H05G

Abstract:
1. An extreme ultra violet light source device for generating extreme ultra violet light by irradiating a laser beam to a target, said device comprising: a chamber in which extreme ultra violet light is to be generated; a target supplier for supplying said chamber with a material to become said target; a laser light source for irradiating a laser beam to said target so as to generate plasma; a collection optical system for collecting extreme ultra violet light emitted from the plasma; a magnetic field generator for generating a magnetic field within said chamber so as to trap charged particles included in particles emitted from the plasma; and an ionizer for ionizing neutral particles included in the particles emitted from the plasma into charged particles so as to cause the magnetic field to trap the charged particles ionized by said ionizer.