Device specially used for grazing incidence XAFS (X-ray Absorption Fine Structure) experiment and regulating method of device
A grazing-incidence, experimental technique, used in measurement devices, material analysis using wave/particle radiation, instruments, etc., can solve the problems of low quality of spectrum, difficult to accurately locate the initial position of the sample, and high detection noise.
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[0045] Before describing the device dedicated to the grazing-incidence XAFS experiment of the embodiment of the present application, the basic principle of the grazing-incidence XAFS spectrum experiment will be described first.
[0046] figure 2 The basic principle of the grazing incidence XAFS spectroscopy experiment is schematically shown. The X-ray 11 is grazingly incident on the sample S at a grazing incidence angle slightly smaller than the critical angle, and the incident X-ray 11 is fully emitted on the surface of the sample S, and only interacts with the material on the surface of the sample S with a thickness of several nanometers to tens of nanometers (specifically The penetration depth is related to factors such as the energy of X-rays and the material itself). The fluorescence 13 generated on the surface contains the structural information of the material on the surface of the sample. The single-energy X-ray scanning is performed on the absorption edge of the de...
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