NUCLEAR MAGNETIC RESONANCE DEVICE

摘要

PURPOSE:To obtain a nuclear magnetic resonance device having extremely high stability of a magnetic field without the need for a magnetic shield at a low cost by making the direction of the main magnetic field approximately orthogonal with certain prescribed disturbing magnetic field like the horizontal component of force of the terrestrial magnetism. CONSTITUTION:The direction 5A of the horizontal component of force of the terrestrial magnetism is made approximately orthogonal with the direction 5 of the main magnetic field made approximately parallel with the Z-axis. More specifically the direction of the horizontal component of force of the terrestrial magnetism is made approximately orthogonal with the direction of the main magnetic field, by which the influence arising from the terrestrial magnetism is considerably decreased. The similar effect is also obtainable by intersecting the main axises of both magnets approximately orthogonally with each other even in the case is which another different magnet of the magnetic field changing in a short period exists near the nuclear magnetic resonance device.