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首页> 外文期刊>Plasma and Fusion Research >Experimental Study of Hall Effect on a Formation Process of an FRC by Counter-Helicity Spheromak Merging in TS-4
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Experimental Study of Hall Effect on a Formation Process of an FRC by Counter-Helicity Spheromak Merging in TS-4

机译:在TS-4中通过反斜率球面融合对FRC形成过程产生霍尔效应的实验研究

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Hall effect on counter-helicity spheromak merging is experimentally investigated in a low- S ? region, where S ? is the ratio of plasma minor radius to ion skin depth. Direct measurement of magnetic field, ion flow, electron density revealed that Hall effect affect not only merging reconnection phase but also relaxation phase through formation of ion flow and current density profiles. Hall effect breaks the symmetry of the “case-O” and “case-I” counter-helicity spheromak merging, which are defined by combinations of poloidal flux and toroidal flux of initial spheromaks. Formation of toroidal current profile and radial outflow pattern are different in case-O and case-I during merging process, and that results in great difference of profiles of electron density after merging.
机译:在低S ?中通过实验研究了霍尔效应对反螺旋球体合并的影响。 区域,其中S ? 是等离子体次半径与离子趋肤深度之比。对磁场,离子流,电子密度的直接测量表明,霍尔效应不仅会影响合并重连接阶段,还会通过形成离子流和电流密度分布图来影响弛豫阶段。霍尔效应破坏了“ case-O”和“ case-I”反螺旋球体合并的对称性,后者由初始球体的极向通量和环形通量的组合定义。在合并过程中,情况O和情况I中,环形电流分布的形成和径向流出模式是不同的,这导致合并后电子密度的分布差异很大。

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