反向剪切环面等离子体磁力线逸出的盆熵与Wada性质

Pedro Haerter, L. Souza, A. C. Mathias, Ricardo L. Viana, I. L. Caldas
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引用次数: 0

摘要

环形聚变等离子体中的磁力线结构,如托卡马克和仿星器中的磁力线结构,代表了等离子体粒子行为的最低阶描述,直到有限拉莫尔和漂移效应。具有反向磁剪切的托卡马克通常存在内部输运屏障,通过部分或全部减少粒子在磁性表面上的输运,有助于改善约束。在这项工作中,我们研究了具有反向剪切的托卡马克中的粒子逃逸,以确定影响输运的分形结构。利用两个基本测度:盆地熵和Wada性质对这些结构进行了定量评价。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Basin Entropy and Wada Property of Magnetic Field Line Escape in Toroidal Plasmas with Reversed Shear
The structure of magnetic field lines in toroidal fusion plasmas, as in tokamaks and stellarators, represents the lowest-order description of the plasma particle behavior, up to finite Larmor and drift effects. Tokamaks with reversed magnetic shear typically present internal transport barriers that help to improve confinement through a partial or total reduction of the particle transport across magnetic surfaces. In this work, we investigate numerically particle escape in tokamaks with reversed shear in order to identify fractal structures affecting transport. These structures are quantitatively evaluated using two basic measures: the basin entropy and the Wada property.
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