磁化等离子体中由于EXB漂移引起输运减少的势垒
Barriers for the reduction of transport due to the EXB drift in magnetized plasmas
摘要：
本文考虑受控热核聚变装置中带电粒子在湍流电场和约束磁场中的1 1/2自由度哈密顿动力学系统。外部电场E = \nabla \bigvee由唯象势V建模，并且磁场B被认为是均匀的。它表明，通过引入一个小的附加控制项的外部电场，它是可能的，以创建一个传输势垒的动力学系统。这种控制方法的鲁棒性也进行了研究。这项理论研究表明，替代运输障碍可以被触发，而不需要在设备规模的控制行动，在目前的内部运输障碍（ITB）。
英文摘要：
We consider a 1 1/2degrees of freedom Hamiltonian dynamical system, which models the chaotic dynamics of charged test-particles in a turbulent electric field, across the confining magnetic field in controlled thermonuclear fusion devices. The external electric field E = \nabla\bigvee is modeled by a phenomenological potential V and the magnetic field B is considered uniform. It is shown that, by introducing a small additive control term to the external electric field, it is possible to create a transport barrier for this dynamical system. The robustness of this control method is also investigated. This theoretical study indicates that alternative transport barriers can be triggered without requiring a control action on the device scale as in present Internal Transport Barriers (ITB).
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