Theoretical investigation on the detection ratio of the magnetization in superconducting wires by a saddle-shaped pick-up coil
Theoretical investigation on the detection ratio of the magnetization in superconducting wires by a saddle-shaped pick-up coil
复制标题
马鞍形拾波线圈超导线材磁化强度检测率的理论研究
DOI：
10.1088/0953-2048/16/5/301
复制
发表时间：
2003
影响因子：
3.6
通讯作者：
K. Funaki
中科院分区：
文献类型：
--
作者：
M. Iwakuma;Masahiro Nanri;M. Fukui;Y. Fukuda;K. Kajikawa;K. Funaki
从理论上研究了马鞍形拾取线圈的适当几何结构，以准确测量具有大各向异性的氧化物超导细导线的交流损耗。定义由鞍形拾波线圈检测的样品线中的磁矩引起的视在信号与实际信号的比值为检测比，计算了检测比与鞍形拾波线圈的直部和开口部的高度、宽度和长度的关系。我们发现，假设样线的有效长度等于鞍形拾波线圈的直线部分的有效长度，并考虑由开口部分检测到的信号补偿由直线部分检测到的信号的不足，可以在不进行补偿的情况下获得实际磁化。最后，具体给出了用于测量氧化物超导线材交流损耗的鞍形拾波线圈的尺寸。
We theoretically investigated the adequate geometrical configuration of a saddle-shaped pick-up coil for the accurate measurement of the ac losses in oxide superconducting thin wires with large anisotropy. Defining the ratio of the apparent signal due to the magnetic moment in sample wires, which is detected by a saddle-shaped pick-up coil, to the actual one as a detection ratio, we calculated the dependences of the detection ratio on the height, width and length of the straight and opening parts of a saddle-shaped pick-up coil. We found out that it is possible to obtain the actual magnetization without compensation by supposing that the effective length of sample wires is equal to that of the straight part of a saddle-shaped pick-up coil and by considering that the signal which is detected by the opening part compensates for the shortage of the signal which is detected by the straight part. Finally, the recommendable dimensions of a saddle-shaped pick-up coil for the measurement of ac losses in currently developed oxide superconducting wires were concretely shown.
传导冷却LTS脉冲线圈的交流损耗特性(2) -耦合损耗特性-
DOI：
--
发表时间：
2006
期刊：
影响因子：
--
作者：
Akifumi;Kawagoe
通讯作者：
Kawagoe