研究目的
To propose a nondestructive method of measuring the inner diameter of monocapillary X-ray optics using confocal X-ray fluorescence based on capillary X-ray optics.
研究成果
The study successfully demonstrated a nondestructive method for measuring the inner diameter of monocapillary optics using CXRF, with a mean relative error of approximately 4.1%. This method is significant for the design, fabrication, and application of monocapillary X-ray optics, though it has limitations regarding the thickness of the capillary wall.
研究不足
The proposed method is not suitable for measuring the inner diameter of monocapillary optics with a large thickness of its wall due to the absorption of X-ray fluorescence signals by the thick wall. The maximum thickness that can be measured depends on experimental conditions and the ratio of the inner diameter to the outer diameter.
1：Experimental Design and Method Selection:
The study utilized confocal X-ray fluorescence (CXRF) based on a monocapillary focusing X-ray lens (MFXRL) in the excitation channel and a polycapillary parallel X-ray lens (PPXRL) in the detection channel. The method involved filling the monocapillary with zinc chlorine solution and scanning the edge of the solution through the confocal volume to measure the inner diameter.
2：Sample Selection and Data Sources:
An elliptical monocapillary X-ray optic (EMXRO) was used, filled with zinc chlorine solution to act as a 'knife edge' for measurement.
3：List of Experimental Equipment and Materials:
The setup included a Mo-target X-ray source, a silicon drift detector (SDD), MFXRL, and PPXRL. The parameters of these lenses and the detector were specified.
4：Experimental Procedures and Operational Workflow:
The zinc chloride solution was scanned into the confocal micro-volume of the CXRF spectrometer, and X-ray fluorescent spectra of Zn were obtained. The scanning process along the Z-axis was conducted in steps to determine the inner diameter.
5：Data Analysis Methods:
The X-ray fluorescence intensities of Zn-Kα during the scanning process were analyzed to determine the inner diameter of the EMXRO.
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