Patent Number: 
Section: claims

1. A mirror for Extreme Ultraviolet (EUV) lithography comprising:a base body consisting essentially of a particulate composite, wherein the particulate composite comprises dispersoids dispersed in a matrix in which the dispersoids are insoluble, wherein the matrix comprises a metallic copper matrix;a polishing layer arranged on the base body; anda reflective layer configured to reflect EUV radiation arranged on the polishing layer. 2. The mirror according to claim 1, wherein the dispersoids have an extent of between 1 nm and 20 nm. 3. The mirror according to claim 1, wherein the dispersoids comprise spheroidal dispersoids. 4. The mirror according to claim 1, wherein the dispersoids comprise titanium oxide particles. 5. The mirror according to claim 1, wherein the dispersoids comprise silicon oxide particles. 6. The mirror according to claim 1, wherein the dispersoids comprise graphite particles. 7. The mirror according to claim 1, wherein the dispersoids comprise diamond-like carbon particles. 8. The mirror according to claim 1, wherein the reflective layer comprises a multilayer system of alternating layers of high index of refraction layers and low index of refraction layers. 9. The mirror according to claim 1, wherein the reflective layer comprises a multilayer system of alternating layers of molybdenum and silicon. 10. The mirror according to claim 1, wherein the dispersoids comprise titanium carbide particles.