NMR hand-held moisture sensor. |
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| Authors: | P J Prado |
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| Institution: | Quantum Magnetics, Inc., 7740 Kenamar Court, San Diego, California 92121, USA. Pablo.prado@qm.com |
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| Abstract: | An open magnet design, hand-held NMR sensor head is presented. Wood moisture content and cement hydration tests demonstrate the potential of the tool for in-situ material assessment. The magnetic field distribution was adjusted by positioning blocks of permanent magnets using millimeter scale 3-dimensional magnetic field modeling. A low Q-factor circuit was used for spin-echo sequences with short echo times. |
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