| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1517817 | Journal of Physics and Chemistry of Solids | 2019 | 4 Pages |
Abstract
We have performed 17O NMR spin-lattice relaxation measurements with conventional NMR techniques on 17O in NpO2. The results have been found to exhibit a field-dependent cross-relaxation effect from 237Np in addition to the field-independent exchange-fluctuation background rate which dominates at high fields. Analysis of the cross-relaxation process reveals a temperature-independent relaxation rate as well as a greatly enhanced unlike spin-spin coupling between the 237Np spins and their 17O nearest neighbors. We discuss the possibility of observing the cross-relaxation effects in other actinide dioxides.
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Authors
Y. Tokunaga, R.E. Walstedt, Y. Homma, D. Aoki, S. Kambe, H. Sakai, T. Fujimoto, S. Ikeda, E. Yamamoto, A. Nakamura, Y. Shiokawa, H. Yasuoka,