Patent ID: 8507883
Filing Date: 2013-08-13
Classification: H05G

Abstract:
1. An extreme ultraviolet light source apparatus for generating extreme ultraviolet light by introducing a laser beam and irradiating a target material with the laser beam to turn the target material into plasma, said apparatus comprising: a chamber in which the extreme ultraviolet light is generated; a target supply unit configured to supply the target material toward a plasma emission point within said chamber; a collector mirror configured to collect the extreme ultraviolet light radiated from the plasma; a first magnetic source; a first magnetic material to be magnetized by said first magnetic source, said first magnetic material having a leading end portion projecting from an inner wall of said first magnetic source toward the plasma emission point; a second magnetic source, and a second magnetic material to be magnetized by said second magnetic source, said second magnetic material having a leading end portion projecting from an inner wall of said second magnetic source toward the plasma emission point, wherein the leading end portion of said first magnetic material and the leading end portion of said second magnetic material face each other with the plasma emission point in between.