BACKING MATERIAL FOR X-RAY OPTICAL COMPONENTS Russian patent published in 2005 - IPC

FIELD: production of backing materials for X-ray optical components.

SUBSTANCE: the invention is pertaining to production of backing materials for X-ray optical components for X-rays with a wave length Λ_R containing a glass ceramics with the glass phase made out of an amorphous material and a crystal phase containing microcrystals. The amorphous material has a positive thermal expansion and the microcrystals a-negative thermal expansion. The stoichiometric ratio of the crystalline phase to the glass phase is taken so, that the thermal expansion value α of the glass ceramics within the temperature range of 20°C up to 100°C makes less than 5·10^-6 K^-1 , in particular, less than 1·10^-6 K^-1. The mean value of the microcrystals is less than 4Λ_R, in particular, less than 2Λ_R, preferably - less than 2/3_{ΛR , the most preferable value - less than ΛR / 2. The invention is characterized by the fact, that the backing material after a surface treatment has a roughness within the high spatial frequencies range (HSFR) less than ΛR /100 (root mean square value), preferably - lessthanΛR /300 (root mean square value). The technical result of the invention is provision of the X-ray optical components surface smoothness after the necessary phases of the surface treatment.}

EFFECT: the invention ensures the X-ray optical components surface smoothness after the necessary phases of the surface treatment.

19 cl, 1 tbl