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sovis-optique

Glass Characteristics


Glass is the main component of a radiation shielding window. It provides both essential required functions: protection and vision.

The protection is related to glass thickness and composition: SAINT-GOBAIN SOVIS works with lead loaded glass (density : 3.3 - 5.2) and borosilicates (density : 2.5). Some glass types can be cerium oxyde doped if needed. The vision comes from the extreme purity of the basic material, associated to polishing and assembling operations carried out with particular care.


Glass Type Density (g/cm3) Refractive index Cerium oxide content Lead oxide content Recommended Dose rate Recommended integrated dose
RW 2.47 1.520 0% 0% 0.1Gy/h 1000Gy
RS25 2.50 1.520 2.50% 0% >104Gy/h >108Gy
RSG 32 3.22 1.584 1.70% 33% >102Gy/h >5 x 106Gy
RW 36 3.6 1.620 0% 45% 0.1Gy/h 1000Gy
RWG 52 5.18 1.805 0% 71% 1Gy/h 1000Gy
RSG 52 5.18 1.810 0.35% 71% 10Gy/h 106Gy
Glass photo 2