2.2.4.6 Gallium Arsenide Concentrator Parameters Primary Reflector/Radiator Design = Parabolic Dish Material = Aluminum Radius = 10 cm Thickness = 0.25 mm Focal Length = 40 cm Secondary Reflector Design = Hyperbolic Dish Material = Aluminum Radius = 3.15 cm Thickness = 0.10 mm Distance from Primary = 38.2 cm Supports for Secondary Number = 4 Length = 38.8 cm Radius = .28 mm Tertiary Reflector Design = CPC Material = Aluminum Maximum Radius = 3.15 cm Minimum Radius = 0.62 cm Height = 3.0 cm Thickness = 0.10 mm High Reflectivity Coating Location = All Mirror Surfaces Material = Vapor Deposited Aluminum Thickness = 1 micrometer Reflectivity = 0.84 High Emissivity Coating Location = Radiator Face Material = Aluminum Oxide Thickness = 25 micrometers Emissivity = 0.8 Glass Cover Plate Material = Fused Silica Radius = 6.2 mm Thickness = 0.2 mm
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