环形磁力线的惰性内输运势垒和径向亚扩散
Noble internal transport barriers and radial subdiffusion of toroidal magnetic lines
摘要：
磁力线运动的单一轨迹表明持久性的中央保护等离子体核心，包围在一个双面运输障碍的混沌壳：后者被确定为由两个Cantori位于两个连续的“最高贵”的数值的扰动安全因子，并形成一个内部运输障碍（ITB）。成功穿过这个势垒的磁力线开始在一个广阔的混沌海中游荡，一直延伸到一个非常坚固的势垒（只要L<1），这个势垒在数学上被认为是等离子体边缘的坚固的KAM表面。在这种情况下，运动被证明是间歇性的，与长阶段的伪陷阱在混乱的壳，或坚持周围的岛屿遗迹，预期连续时间随机游走。
英文摘要：
Single trajectories of magnetic line motion indicate the persistence of a central protected plasma core, surrounded by a chaotic shell enclosed in a double-sided transport barrier : the latter is identified as being composed of two Cantori located on two successive "most-noble" numbers values of the perturbed safety factor, and forming an internal transport barrier (ITB). Magnetic lines which succeed to escape across this barrier begin to wander in a wide chaotic sea extending up to a very robust barrier (as long as L<1) which is identified mathematically as a robust KAM surface at the plasma edge. In this case the motion is shown to be intermittent, with long stages of pseudo-trapping in the chaotic shell, or of sticking around island remnants, as expected for a continuous time random walk.
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