| 摘要 |
An NMR sample, frozen in a tube and having achieved a specified higher degree of polarization for an NMR experiment, is rapidly heated and melted before it loses a significant portion of the achieved polarization and still retains 10% or more. The heating may be achieved by passing an electric current, or currents, through a heating wire, or wires, provided to the tube, or by placing the tube inside a furnace provided with an electric radiator. NMR experiments with high sensitivity can be carried out with such a sample still retaining a high level of polarization.
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