Thermoelectric rotating torus for fusion.
Thermoelectric rotating torus for fusion.
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用于聚变的热电旋转环面。
DOI：
10.1103/physrevlett.91.195002
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发表时间：
2003
影响因子：
8.6
通讯作者：
Yi
中科院分区：
文献类型：
--
作者：
A. Hassam;Yi
等离子体环面通过外力以环形方式旋转至超音速。输入功率维持旋转，也加热等离子体。由此产生的温度梯度产生的热电效应产生并维持一个防止电阻衰减的极向磁场，将等离子体限制在稳定状态。旋转中的剪切使等离子体稳定地发生MHD扭结和交换。作为核聚变装置，这样的系统有两个新的优点：不需要强大的电磁铁来产生限制磁场，并且对磁场强度没有限制，因此对等离子体的压力没有限制。该系统必须具有较大的纵横比，以尽量减少离心效应，并需要一个弱的外部垂直磁场来平衡径向环向力。
A plasma toroid is rotated toroidally to supersonic speeds by external means. The input power maintains the rotation and also heats the plasma. The thermoelectric effect from the resulting temperature gradient creates and maintains a poloidal magnetic field against resistive decay, confining the plasma in steady state. The shear in the rotation keeps the plasma stable to MHD kinks and interchanges. Such a system has two novel advantages as a fusion device: there are no strong electromagnets needed to create the confining magnetic field, and there is effectively no limit on the field strength and, hence, no limit on the plasma pressure contained. The system has to be of a large aspect ratio, to minimize centrifugal effects, and a weak, external vertical magnetic field is needed to balance the radial hoop force.