Development of Low-Power X-ray Fluorescence Spectrometer in 3D geometry for Trace Element Determination in Alloys and Its Application to Steel Analysis
Project/Area Number |
17H06792
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Single-year Grants |
Research Field |
Metal making/Resorce production engineering
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Research Institution | Kyoto University |
Principal Investigator |
Tanaka Ryohei 京都大学, 工学研究科, 助教 (40804323)
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Project Period (FY) |
2017-08-25 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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Keywords | 蛍光X線分析 / 鋼材分析 / 微量分析 / 偏光X線 / 白色X線 / 軽元素偏光素子 / Compton散乱 / 3Dプリンタ / 偏光蛍光X線分析 / 反跳電子 / de Broglie波 / 連続X線 / X線偏光 / 微量元素分析 / 散乱X線 / 偏光光学系 / Bragg回折 / 金属生産工学 / 材料分析 / 鉄鋼材料 / X線 / 偏光 |
Outline of Final Research Achievements |
A three-dimensional polarized X-ray fluorescence spectrometer was assembled with a low-power X-ray tube of 40 milliwatts, and a sample of stainless steel was measured with an acrylic polarizer. By using the spectrometer combined with regin equipment made by a 3D printer, trace elements included in stainless steels could be detected. The polarization measurement of scattered X-rays from an acrylic and lead plates substantiated that Compton scattered X-rays from an acrylic plate had higher degree of polarization than the elastically scattered X-rays from a lead plate. Highly polarized Compton scattered X-rays from the light-element polarizer leads to the background reduction and the changes of the characteristic X-ray intensity in XRF spectra measured by our laboratory-made spectrometer.
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Academic Significance and Societal Importance of the Research Achievements |
スペクトル中のバックグラウンドの低減により高感度分析が可能な3次元偏光光学蛍光X線装置の小型化を達成することは,河川や土壌などの環境試料中有害元素のその場分析など簡便・迅速な分析につながるだけでなく,スクラップ鋼材のスクリーニングや製鋼工程でのオンサイト・オンライン分析などへの応用が期待でき,鋼材の生産性・品質性双方の向上が見込まれるため,産業面での貢献が考えられる.また,小型装置を用いて,高偏光性と白色性を併せ持つ励起X 線の生成手法が確立されれば,実験室系における高感度多元素同時迅速分析が可能となり,新たな偏光X 線生成手法の確立というX 線物理における学理の構築にも貢献するものと考える.
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Report
(3 results)
Research Products
(18 results)