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arXiv 1808.00622physics.plasm-ph
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MHD均衡的另一种方法

A different approach to the MHD equilibrium

John Hedditch

摘要:

描述等离子体平衡的方程来自系统的总能量。即使对于磁场可能局部消失的系统,MHD平衡也是成立的。通过守恒的螺旋度,禁闭是密切相关的电磁张力。对于一个轴对称的设备,存在的磁场或电流绕轴被证明是不稳定的。这为一些MHD预测稳定性的设备的性能差提供了一个简单的解释。

英文摘要:

Equations describing plasma equilibria are derived from the total energy of the system. The MHD equilibrium is shown to hold even for systems where the magnetic field may locally vanish. Through conservation of helicity, confinement is shown to be intimately related to electromagnetic tension. For an axisymmetric device, the presence of a magnetic field or current circling the axis is shown to be destabilising. This provides a simple explanation for the poor performance of some devices for which MHD predicts stability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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