The Manufacture and Characteristics of Graphite X-ray Condenser Devices

We developed single-bent and double-bent graphite X-ray condenser devices by subjecting multiple layers of polyimide films to high-temperature graphitization. Polyimide film exhibited a complicated expanding or shrinking behavior in each of the pyrolysis and graphitization processes. We explained here the basic manufacturing process for polyimide film bending that avoided wrinkles through control of the heating/pressurizing process. The mosaic spread of the diffraction lines of graphite using this condenser device was in the order of 0.4 degrees, which enabled X-ray condensation by up to a factor of 10 times for a single-bent type condenser device and about 240 for a toroidal type condenser device.