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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