Development of X-ray Fluorescence Elemental Analysis 3D Imaging Camera with an X-ray Polarization Filter
| Project/Area Number |
18K18767
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 15:Particle-, nuclear-, astro-physics, and related fields
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2018-06-29 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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| Keywords | 蛍光X線分析 / X線ピクセル検出器 / CMOSピクセル検出器 / コード化マスク / X線スペクトル / X線撮像分光 / 微小ピクセル / X線偏光検出 / Ｘ線蛍光分析 / 3次元撮像 / X線撮像装置 / 符号化マスク / 蛍光X線撮像 / X線画像検出器 / X線偏光検出器 / X線蛍光分析 / CMOS検出器 / 画像再合成 |
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| Outline of Final Research Achievements |
Our primary goal is to develop a fluorescence X-ray 3D imager with a compact X-ray source, coded mask, and a CMOS pixel detector. We aimed to apply the CMOS detector designed for visible light to detect X-rays, and the imager system whole should be inexpensive and compact. We succeeded in measuring the energy of a single X-ray photon at room temperature in the air with the most minute size pixel CMOS detector designed for visible light. We also demonstrated that the same detector could measure X-ray polarization. We then detected fluorescent X-rays from a panel made of various metals in mosaic through a pinhole. We succeeded in obtaining a color X-ray image that shows a distribution of metals with different fluorescence energies. We replaced the pinhole with a coded mask, too. However, decoding procedure and 3D extension remained our future work. The CMOS pixel detector realized an astronomical X-ray interferometer, of which principle was invented by us, as a key device.
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| Academic Significance and Societal Importance of the Research Achievements |
非破壊で元素組成を調べる蛍光Ｘ線分析装置は、広く普及している。ただし、多くは測定対象全体の元素組成を測定する装置である。測定対象の場所ごとの元素組成、つまり、元素ごとの分布を測定する、スキャン式の蛍光X線分析装置は、大型、高価で、測定時間もかかる。本研究は、X線ピクセル検出器とコード化マスクを組み合わせて、蛍光X線画像を一気に取得する、コンパクト、安価な装置の装置の開発を目指している。本研究で、可視光用CMOS検出器でも、常温でX線光子エネルギー測定に成功し、ピンホール使用であるが、蛍光X線画像も得られた。目的の装置が可能であることをほぼ示せた。完成すれば、応用の範囲と規模は図りしれない。
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Report
(4 results)
Research Products
(35 results)
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[Journal Article] Sub-arcsecond imaging with multi-image x-ray interferometer module (MIXIM) for very small satellite2018
Author(s)
Hayashida, K., Kawabata, T., Hanasaka, T., Asakura, K., Yoneyama, T., Okazaki, K., Ide, S., Matsumoto, H., Nakajima, H., Awaki, H., Tsunemi, H.
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Journal Title
Proceedings of the SPIE
Volume: 10699
Pages: 29-29
DOI
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