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本文针对目前典型的Bi2223和YBCO高温超导带材,在液氮温区下,测量了不同焊接接头长度对接头处的最小失超能(MQE)和失超传播速度(NZPV);分析了同种带材不同接头长度失超传播速度和最小失超能随归一化传输电流的变化关系以及不同带材相同接头下的变化关系.结果表明,不同接头长度对最小失超能的影响并不大,而随着焊接接头长度的增加,失超传播速度会逐渐减小.

In this paper,the minimum quench energy (MQE) and the normal zone propagation velocity (NZPV) of Bi2223 and YBCO HTS tape were measured at liquid nitrogen.The NZPV and MQE of the different HTS tape with different length of soldering zone as a function of normalized transport current was discussed.The result showed the effect of different length of soldering zone on MQE is insignificant.The NZPV declined along with raising the length of soldering zone.

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