超导磁悬浮涡旋电流元模型磁场分布特征  

Magnetic Filed Distributions of Superconducting Levitation Vortex Current Model

作　　者：李新利[1] 张洁[1] 王永永[1] 卢合强[1] 王俊喜[1] 李平林[1] 

机构地区：[1]郑州大学材料物理重点实验室,河南郑州450052

出　　处：《稀有金属材料与工程》2008年第A04期42-44,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(No.10647145);河南省基础与前沿及河南教育厅自然科学基金资助

摘　　要：通过详细分析超导磁悬浮特征,论述了各理论模型与实际应用情况存在的偏离,其原因在于理论上为超导体设置边界,从而严重限制了超导体对外磁场的动态响应。为了避免这种缺陷,文中取自然边界,并将涡旋电流(VC)作为独立的微磁场源与外磁场相互作用,运用基本电磁场理论描述超导磁悬浮特征。经过严格推导,给出了超导磁悬浮系统的磁场分布表达式。对测量结果进行反演,有望为超导透析技术奠定理论依据。Through analyzing the characteristics of superconducting magnetic levitation, we discussed in detail the previous theoretical defects caused by the boundaries setting for the type-II superconductor. The reason is that the boundaries restrict severely the dynamic response to applied filed for superconductor. Based on vortex currents （VC）, we adopt a natural boundary and regard them as some tiny independent magnetic origins to interact with the applied filed. By the strict mathematical inference, some formulas of magnetic distributions are expressed within the superconductor for the levitation system. Further research is hopeful to provide a theoretic support in the foundation of superconducting dialyzable technique.

关 键 词：超导磁悬浮 涡旋电流(VC) 自然边界 超导透析技术 

分 类 号：O511.4[理学—低温物理]