| Project/Area Number |
25706032
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Partial Multi-year Fund |
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| Research Field |
Quantum beam science
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
OSAWA Takahito 独立行政法人日本原子力研究開発機構, 原子力研究開発部門 量子ビーム応用研究センター, 研究副主幹 (70414589)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥23,270,000 (Direct Cost: ¥17,900,000、Indirect Cost: ¥5,370,000)
Fiscal Year 2014: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
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| Keywords | ミュオン / 分析 / 隕石 / 元素分析 / 地球外物質 / 負ミュオン |
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| Outline of Final Research Achievements |
The principle of muonic x-ray transitions and the use of negative-muon beams for chemical analysis were first suggested over 50 years ago. Since then, muonic x-ray spectrometry has been tested as a nondestructive method for elemental analysis. However, because a highly intense muon beam is required to analyze real samples, this method has heretofore never been practical as an analytic technique. I developed a new elemental analysis system that uses an intense negative-muon beam at J-PARC and measured meteorites and a standard material. The main system components are an electromagnet, an Al flight tube, an Al sample chamber, a lead shielding body, and a Ge detector. The background and signal-to-noise ratio was significantly better than that obtained in a previous study, and all significant elements in the meteorite and standard samples were detected. Thus, this system can be used for muonic x-ray analysis of extraterrestrial materials.
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