Study on Thorium-229 low-lying isomeric state
| Project/Area Number |
15H03661
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Okayama University |
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Principal Investigator |
Yoshimura Koji 岡山大学, 異分野基礎科学研究所, 教授 (50272464)
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| Co-Investigator(Kenkyū-buntansha) |
吉見 彰洋 岡山大学, 異分野基礎科学研究所, 准教授 (40333314)
笹尾 登 岡山大学, 異分野基礎科学研究所, 特任教授 (10115850)
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| Co-Investigator(Renkei-kenkyūsha) |
YAMAGUCHI Atsushi 理化学研究所, 香取量子計測研究室, 研究員 (70724805)
SETO Makoto 京都大学, 原子炉実験所, 教授 (40243109)
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| Research Collaborator |
Stellmer Simon ウィーン工科大学, 研究員
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
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| Keywords | 原子核時計 / 核共鳴散乱 / X線検出器 / トリウム / APD / 周波数標準 / 物理定数の経年変化 / 実験核物理 / 放射光X線 / 高時間分解能 / 放射光 / アイソマー / 高時間分解能X線測定 |
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| Outline of Final Research Achievements |
We searched for eV-order meta-stable isomeric excited state of Th-229, which is extraordinally low-lying for ordinary nuclei. We developed the new scheme using nuclear resonant scattering with high intense synchrotron radiation X-ray source, fast X-ray detection system, high performance targetry, and X-ray focusing system. We have successfully observed the precise signal from nuclear resonant scattering of nuclei with half life below 1 ns.
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Report
(4 results)
Research Products
(17 results)
