Observation of 239Pu Nuclear Magnetic Resonance

被引：48

作者：

Yasuoka, H. ^{[1
,2
]}

Koutroulakis, G. ^{[1
]}

Chudo, H. ^{[1
,2
]}

Richmond, S. ^{[1
]}

Veirs, D. K. ^{[1
]}

Smith, A. I. ^{[1
]}

Bauer, E. D. ^{[1
]}

Thompson, J. D. ^{[1
]}

Jarvinen, G. D. ^{[1
]}

Clark, D. L. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

来源：

SCIENCE | 2012年 / 336卷 / 6083期

关键词：

SUSCEPTIBILITY; MOMENT;

D O I：

10.1126/science.1220801

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In principle, the spin-1/2 plutonium-239 (Pu-239) nucleus should be active in nuclear magnetic resonance spectroscopy. However, its signal has eluded detection for the past 50 years. Here, we report observation of a Pu-239 resonance from a solid sample of plutonium dioxide (PuO2) subjected to a wide scan of external magnetic field values (3 to 8 tesla) 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 n(PuO2)/2 pi to be 2.856 +/- 0.001 megahertz per tesla (MHz/T). Assuming a free-ion value for the Pu4+ hyperfine coupling constant, we estimated a bare (239)gamma n/2 pi value of similar to 2.29 MHz/T, corresponding to a nuclear magnetic moment of mu(n) approximate to 0.15 mu(N) (where mu(N) is the nuclear magneton).

引用

页码：901 / 904

页数：4

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