| 摘要 |
PURPOSE:To measure the distribution of magnetic susceptibility in a specimen without destruction, by providing a magnetic-field applying apparatus, which can change its position with low acceleration relatively with respect to the specimen, and providing a magnetism detecting means, whose relative position with respect to the applied magnetic field is fixed. CONSTITUTION:A magnetism sensor 103 and a supporting frame 109 are fixed to a magnet 106. The magnet 106 is stationary. A specimen 101 is moved in the direction of a Z axis with a moving means 301, which is linked with a holding means 102 for the specimen. High acceleration cannot be applied to the specimen 101. When a sufficient air space is provided in the direction of Z, however, the body can be moved at weak acceleration. At the time of measurement, equal-speed movement without acceleration is performed, and the adverse effect of the acceleration can be avoided substantially. In detail, when a human body is specimen, acceleration of 1/10 G or less is recommended. The magnetism sensor is associatively moved with respect to the applied magnetic field. The specimen 101 is relatively moved with respect to the magnetism sensor. Thus a signal corresponding to the magnetic susceptibility of the specimen can be obtained in the magnetism sensor.
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