title: NMR hand-held moisture sensor.
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.
authors.affiliation: Quantum Magnetics, Inc., 7740 Kenamar Court, San Diego, California 92121, USA. Pablo.prado@qm.com
authors.forename: P J
authors.initials: PJ
authors.lastname: Prado
mesh_terms: D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D014867:Water / Q000737:chemistry*; D014934:Wood
chemical_list: D014867:Water