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首页> 外文期刊>Journal of surface investigation: x-ray, synchrotron and neutron techniques >Dependences of HTS tape critical parameters on fluences under irradiation with heavy ions and high energy electrons
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Dependences of HTS tape critical parameters on fluences under irradiation with heavy ions and high energy electrons

机译：HTS磁带关键参数对重离子和高能电子辐照下注量的依赖性

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摘要

Experimental data on the study of modifications of two types of the YBCO(123)-based composite tape under irradiation with electrons with the energy of 23 MeV and ~(132)Xe~(27+) (167 MeV), ~(84)Kr~(17+) (107 MeV), and ~(40)Ar~(8+) (48 MeV) ions in a wide range of irradiation doses are presented. It is shown that no changes in the HTS transition temperature and critical current occurred under electron irradiation up to the dose D ≈ 10~(-4) disp/a (displacements per atom). The threshold dose of irradiation with ~(132)Xe~(27+) ions, at which superconductivity disappears, is determined. In comparison with the initial value, the critical current of ~(40)Ar~(8+) ions is found to increase by ≈18% in the zero magnetic field at T = 77 K. This effect can be explained by the pinning centers for Abrikosov vortices induced by relatively small ion irradiation doses. High doses of heavy ions lead to partial or complete amorphization of a superconductor, which results first in a decrease in the critical current and transition temperature and then in a total disappearance of superconductivity. X-ray diffraction is used to study the changes in the crystal structure of the YBCO(123) superconductor under ion irradiation.
机译：研究两种类型的YBCO（123）基复合带在电子辐照下的能量为23 MeV和〜（132）Xe〜（27+）（167 MeV），〜（84）的实验数据提出了多种照射剂量下的Kr〜（17+）（107 MeV）和〜（40）Ar〜（8+）（48 MeV）离子。结果表明，在电子辐照下，直至剂量D≈10〜（-4）disp / a（每原子位移），HTS转变温度和临界电流都没有变化。确定〜（132）Xe〜（27+）离子辐照的阈值剂量，在该剂量下超导性消失。与初始值相比，在T = 77 K的零磁场中，〜（40）Ar〜（8+）离子的临界电流增加了约18％。这种影响可以通过钉扎中心来解释。相对较小的离子辐照剂量引起的Abrikosov涡旋。高剂量的重离子导致超导体部分或完全非晶化，这首先导致临界电流和转变温度降低，然后导致超导性完全消失。 X射线衍射用于研究离子辐照下YBCO（123）超导体的晶体结构变化。

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