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Observation of $$^{239}$$Pu nuclear magnetic resonance

Yasuoka, Hiroshi; Koutroulakis, G.*; Chudo, Hiroyuki ; Richmond, S.*; Veirs, D. K.*; Smith, A. I.*; Bauer, E. D.*; Thompson, J. D.*; Jarvinen, G. D.*; Clark, D. L.*

The spin-1/2 plutonium-239 ($$^{239}$$Pu) nucleus should in principle be active in nuclear magnetic resonance spectroscopy. However, its signal has eluded detection for the past fifty years. Here, we report observation of a $$^{239}$$Pu resonance from a solid sample of plutonium dioxide, PuO$$_2$$, subjected to a wide scan of external magnetic field values ($$B_0=3$$ to 8T) at a temperature of 4 Kelvin. By mapping the external field dependence of the measured resonance frequency, we determined the nuclear gyromagnetic ratio $$^{239}$$$$gamma$$$$_{rm n}$$(PuO$$_2$$)/2$$pi$$ to be 2.856 $$pm$$ 0.001 MHz/T. Assuming a free-ion value for the Pu$$^{4+}$$ hyperfine coupling constant, we estimated a bare $$^{239}$$$$gamma$$$$_{rm n}$$/2$$pi$$ value of approximately 2.29 MHz/T, corresponding to a nuclear magnetic moment of $$mu$$$$_{rm n}$$ $${approx}$$ 0.15 $$mu$$$$_{rm N}$$ (where $$mu$$$$_{rm N}$$ is the nuclear magneton).

Language

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English

Journal

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Science

Volume

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336

Number

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6083

Pages

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p.901 - 904

Publication Year/Month

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2012/05

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Paper URL

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https://doi.org/10.1126/science.1220801

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Keywords

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no keyword

Research Facility

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Press Release

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世界で初めて$$^{239}$$Pu核磁気共鳴信号の観測に成功; 新たなプルトニウム科学の幕開け

JAEA R&D Navigator

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First Observation of $$^{239}$$Pu Nuclear Magnetic Resonance; Elucidation of the Electronic State in Pu Compounds[/]

Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:86.06

Category:Multidisciplinary Sciences

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