| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2012: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
|
|---|
| Outline of Final Research Achievements |
We developed a novel micro X-ray fluorescence (micro-XRF) system based on proton-induced quasi-monochromatic X-ray. A micro X-ray beam was produced by focusing 8-keV X-ray, which was emitted from a copper thin foil bombarded by 2.5-MeV protons, by a poly-capillary lens. By using this X-ray beam, we performed a micro-XRF measurement and obtained a lower detection limit of 2.3 ng for cobalt deposited on a copper substrate. In addition, we succeeded in reconstructing the micro pattern of cobalt thin foil formed on the substrate with a spatial resolution of around 250 microns. An X-ray irradiation stand using 45-degree bending magnet was constructed for the trace element analysis for living biological samples. With this device, we successfully performed an in-vivo measurement of the cobalt concentration in a leaf of living duckweed floating on 500-ppm cobalt solution.
|
