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Fabrication of X-ray absorption grating by thermal composite method

In this paper, we propose a new method to prepare X-ray absorption gratings. The thermal composite absorption gratings with periods of 80 μm and 140 μm are successfully fabricated by using the difference in X-ray absorption between aluminum and silver film. The production process and the use of equipment are simple and easy to implement. A number of absorption gratings can be produced in one production, which greatly reduces the cost of gratings. Finally, the X-ray single absorption grating imaging experiment is used to verify the effectiveness of the thermal composite absorption grating.