Anomalous spin-lattice relaxation in solid3He |
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Authors: | R P Giffard W S Truscott J Hatton |
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Affiliation: | (1) The Clarendon Laboratory, Oxford, England |
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Abstract: | Nuclear spin-lattice relaxation measurements have been carried out in bcc and hcp solid3He at low temperatures. The observed relaxation rates are anomalously high and indicate that a typical sample has a substructure of small domains at whose boundaries rapid spin-lattice equilibrium takes place. Experiments on the sample anisotropy show that these domains cannot be crystallites and we believe that they may be determined by stacking faults or small-angle grain boundaries. The magnetic field dependence of the spin diffusion coefficient and the effects of dissolved4He are also investigated. |
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