X-ray fluorescence imaging with polycapillary X-ray optics
| Autor: | Kouichi Tsuji, Tasuku Yonehara, Makoto Yamaguchi |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Physics
Total internal reflection Spectrometer business.industry Fluorescence spectrometry Analytical chemistry X-ray fluorescence X-ray optics Sample (graphics) Fluorescence Atomic and Molecular Physics and Optics Analytical Chemistry Optics Laser-induced fluorescence business Instrumentation Spectroscopy |
| Zdroj: | Spectrochimica Acta Part B: Atomic Spectroscopy. 65:441-444 |
| ISSN: | 0584-8547 |
| DOI: | 10.1016/j.sab.2010.02.004 |
| Popis: | X-ray fluorescence spectrometry imaging is a powerful tool to provide information about the chemical composition and elemental distribution of a specimen. X-ray fluorescence spectrometry images were conventionally obtained by using a μ-X-ray fluorescence spectrometry spectrometer, which requires scanning a sample. Faster X-ray fluorescence spectrometry imaging would be achieved by eliminating the process of sample scanning. Thus, we developed an X-ray fluorescence spectrometry imaging instrument without sample scanning by using polycapillary X-ray optics, which had energy filter characteristics caused by the energy dependence of the total reflection phenomenon. In the present paper, we show that two independent straight polycapillary X-ray optics could be used as an energy filter of X-rays for X-ray fluorescence. Only low energy X-rays were detected when the angle between the two optical axes was increased slightly. Energy-selective X-ray fluorescence spectrometry images with projection mode were taken by using an X-ray CCD camera equipped with two polycapillary optics. It was shown that Fe Kα (6.40 keV) and Cu Kα (8.04 keV) could be discriminated for Fe and Cu foils. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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