| 摘要 |
<p>A magnetically shielding structure in which by combining magnetically shielding members of various qualities with each other, its magnetically shielding capability is made to improve, and the greatly lower magnetic field than an external one can be realized effectively. For this puropose, against the penetrating magnetic field whose distribution, on the longish axis of a cylindrical shielding body made of a material manifesting Meissner effect, attenuates toward the center direction of the cylindrical shielding body, a magnetic induction is made to generate in a cylindrical body made of a high permeability material. Then, the penetrating magnetic field is made to be shorted magnetically, being absorbed by the high permeability material. For making this possible, the cylindrical body made of a high permeability material, which has an opening being along the longish axis direction of the cylindrical shielding body, is provided, leaving a space between the cylindrical shielding body made of the superconductive material manifesting Meissner effect and itself. <IMAGE></p> |
