A Research On The Influence Of Diffraction Properties By Diffractive Optical Element:in X-RAY Domain

Because of its shot wavelength and perfect penetrating ability, X-ray has drawn the attention of scientists of all domains worldwide. Nowadays X-ray has become a dispensable tool in researching areas, such as space detection, medical treatment, energy, and astronautics. In the domain of space science, the detection and analysis of the space radiation X-ray is really hot. X-ray spectrometer is an important tool for plasma diagnosis and space exploration, and X ray diffraction optical element is the core element of X-ray spectrometer. So, the research on the diffraction optics element (DOE) is gradually become the focus of scientific research. And X-ray diffraction optical element also has a wide range of applications in research areas, such as laser inertial confinement fusion, synchrotron radiation, telescopes and so on.In this article, in view of the application of X-ray DOE in the domain of inertial confinement fusion experiments of plasma diagnosis and its application in X-ray spectrometer, we successfully design and manufacture the zone plate with a large aspect ratio of10:1and the grating with a high ling density of6666lines/mm. By a research on their diffraction properties, we get the diffraction intensity distribution and pattern of the zone plate as well as the diffraction efficiency of the grating. Finally, we improve the diffraction efficiency of the zone plate in the domain of high energy X-ray by the means of improving the aspect ratio. For the66661ines/mm grating, we test the diffraction effect. In the range from2Kev to5Kev, the Light and dark and diffraction fringes can be observed definitely, and the diffraction efficiency we got in the test is in accordance with the theory computation result of approximately10%, which means that the grating can be used in Spectroscopy studies range from2Kev to5Kev.