| Project/Area Number |
23654141
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
UESAKA Tomohiro 独立行政法人理化学研究所, 上坂スピン・アイソスピン研究室, 主任研究員 (60322020)
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| Co-Investigator(Renkei-kenkyūsha) |
SAKAGUCHI Satoshi 国立大学法人九州大学, 理学府物理学科, 助教 (70569566)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 常温核偏極 / 光励起三重項状態 / パラ-ターフェニル / 核スピン偏極 / パラ・ターフェニル |
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| Research Abstract |
Production of 13C hyperpolarization at room temperature by transferring proton polarization to 13C is proposed. Protons in a crystal of p-terphenyl doped with pentacene was polarized at room temperature by means of a triplet-DNP method. Our research has revealed that 1) a spin-relaxation rate of protons takes minimum in the temperature region of 280?300 K, 2) when a temperature control is introduced, a proton polarization that is a factor of three higher than the previous result (4.8%) was obtained. Experiments to transfer thus-produced proton polarization to 13C will be continued.
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