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Micro-beam X-ray fluorescence equipment used for atmosphere particle single-particle analysis

An analytical device, X-ray technology, used in the field of single particle analysis

Active Publication Date: 2009-08-05
BEIJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned requirements can be met by using the "Ping District" capillary X-ray converging lens to converge the X-ray source. At present, there is no such micro-beam X-ray analysis equipment based on the "Ping District" capillary X-ray converging lens in the world.

Method used

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  • Micro-beam X-ray fluorescence equipment used for atmosphere particle single-particle analysis
  • Micro-beam X-ray fluorescence equipment used for atmosphere particle single-particle analysis
  • Micro-beam X-ray fluorescence equipment used for atmosphere particle single-particle analysis

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Embodiment Construction

[0010] see figure 1 , the micro-beam X-ray analysis equipment based on the "Ping District" capillary X-ray converging lens includes X-ray light source 1, "Ping District" capillary X-ray converging lens 2, pinhole diaphragm 3, sample stage 4, microscope 5 and detector 6 composition. The X-rays emitted by the X-ray light source 1 are converged by the "ping area" capillary X-ray converging lens into a micro-focus spot with a "ping area", and the X-rays outside the "ping area" are filtered out by the pinhole diaphragm 3, and the sample is in the The microscope 5 monitors the "plateau" and the detector 6 detects the X-ray signal from the sample.

[0011] see figure 2 , the diameter D of the entrance end of the "ping area" capillary X-ray converging lens in and outlet diameter D out with its largest section D max Compared with the diameter of the former, the former is smaller; the focal length f of the entrance focal length of the capillary X-ray converging lens 1 and the exi...

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Abstract

A microbeam X-ray analytical device based on a capillary X-ray convergent lens with a micro focal spot flat area comprises an X-ray light source, a pinhole diaphragm, the capillary X-ray convergent lens with a micro focal spot flat area, a sample, a microscope and a probe, wherein the capillary X-ray convergent lens with a micro focal spot flat area is a core component. The intensity distribution of X-rays at the micro focal spot flat area of the capillary X-ray convergent lens is quite uniform, and the X-rays have higher power density gain, so the microbeam X-ray analytical device is especially suitable for analyzing single atmospheric particle and other micro particle so as to rapidly obtain the element characteristic peak relative intensity and the single particle power spectrum which is single particle fingerprint spectrum unrelated to the position of the single particle in the micro focal spot flat area of the capillary X-ray convergent lens.

Description

technical field [0001] The invention relates to a micro-beam X-ray analysis device based on a "ping area" capillary X-ray converging lens. "Ping area" capillary X-ray converging lens is to use polycapillary to converge the divergent X-rays into a micro-focus spot with "Ping area", and the uniformity of X-ray intensity distribution in the "Ping area" (the difference between the maximum and minimum intensity) difference divided by the intensity average value) is high, and has a high power density gain (intensity per unit area), the micro-beam X-ray analysis equipment based on the "ping area" capillary X-ray converging lens is especially suitable for the analysis of tiny particles such as atmospheric particles Perform single particle analysis. Background technique [0002] With the development of analytical technology, people's research on atmospheric particulate matter has shifted from the early overall particulate matter sample analysis to single particle analysis. This is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/14G01N23/227
Inventor 孙天希刘志国滕玥鹏杨科
Owner BEIJING NORMAL UNIVERSITY
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