Compressive strain and critical current properties of Nb/sub 3/Sn conductors reinforced by center-arranged and distributed Ta
Compressive strain and critical current properties of Nb/sub 3/Sn conductors reinforced by center-arranged and distributed Ta
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中心排列和分布Ta增强Nb/sub 3/Sn导体的压缩应变和临界电流特性
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
M. Umeda
中科院分区：
文献类型：
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作者：
T. Takao;Y. Takahashi;T. Ito;M. Yamaguchi;K. Umekawa;J. Kondo;M. Umeda
我们制备了两种具有相同直径的Nb/sub 3/Sn超导体，一种超导体的横截面由中心聚集的钽（Ta）增强，另一种超导体的横截面由分布的Ta增强。我们对导体施加压缩力，并测量导体的降解。当由于对导体的压缩力引起的导体应变为零时，分布Ta导体的临界电流（I/sub c/）大于中心聚集Ta导体的临界电流。然而，分布Ta型导体的I/sub c/迅速降低，并且当压缩应变变为约5或6%时，中心聚集Ta导体的I/sub c/超过分布Ta型的I/sub c/。实验结果表明，中心聚集的Ta导体比分布的Ta导体对导体的压应变有更好的耐受性。
We have fabricated two kinds of Nb/sub 3/Sn superconductors having the same diameter; one superconductor is reinforced by center-gathered tantalum (Ta) in a cross-section of the conductor, and the other is reinforced by distributed Ta in the cross-section. We applied compressive force to the conductors, and measured degradation of the conductors. When the conductor's strain due to the compressive force to the conductors was zero, a critical current (I/sub c/) of the distributed Ta conductor was larger than that of the center-gathered Ta conductor. However, an I/sub c/ of the distributed-Ta type conductor rapidly decreased, and when the compressive strain became approximately 5 or 6%, the I/sub c/ of the center-gathered Ta conductor exceeded that of the distributed-Ta type. It was experimentally shown that the center-gathered Ta conductor was more tolerant than the distributed Ta conductor about the compressive strain to the conductor.