High-performance bench-top cylindrical magnetic shield with magnetic shaking enhancement
High-performance bench-top cylindrical magnetic shield with magnetic shaking enhancement
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DOI：
10.1109/tmag.2002.803123
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发表时间：
2002-09-01
影响因子：
2.1
通讯作者：
Tashiro, K
中科院分区：
文献类型：
--
作者：
Nagashima, K;Sasada, I;Tashiro, K
介绍了一种高性能的非晶薄带台式圆柱形磁屏蔽。它有两个主动壳体，由Metalloy 2705M非晶薄带制成，并施加了磁振动增强。采用Metallo2714A非晶薄带作为被动壳体，减小磁振漏场。总重量为1.3公斤的非晶带，足够大的屏蔽性能进行了测量，对10 μ T，10赫兹的均匀磁场。轴向屏蔽因子（ASF）为700，横向屏蔽因子（TSF）大于20000。在最差条件下，剩余de场在轴向方向上小于20 nT，在径向方向上小于5 nT，其中屏蔽轴沿着地球磁场的水平分量（类似于32 μ T）定向。
A high-performance bench-top cylindrical magnetic shield made of amorphous ribbons is presented. It has double active shells made of Metglas 2705M amorphous ribbon to which magnetic shaking enhancement is applied. Passive shells made of Metglas 2714A amorphous ribbons were installed to reduce leakage field of magnetic shaking. With total weight 1.3 kg of the amorphous ribbons, sufficiently large shielding performance was measured against 10-muT, 10-Hz uniform magnetic field. The value of axial shielding factor (ASF) was 700 and transverse shielding factor (TSF) was more than 20000. The residual de fields were less than 20 nT in axial direction and 5 nT in radial direction under the worst condition, where the shield axis is oriented along the horizontal component (similar to 32 muT) of the Earth's magnetic field.