Investigation of chaotic topology by density puked wave propagation

1992 ~ 1993年的研究结果总结如下：(1)用颗粒注入法追踪磁力线。我们研究了烧蚀粒子在等离子体内部、刮擦层和分流板上的时间响应。(a)粒子运动与场线追踪的比较表明两者吻合较好。(b)估计导流场线的连接长度为- 10m，由延迟时间测量得出。(c)对于特定的位置，响应是如此之快，以至于表明在边缘附近的随机性。(d)全局约束特性影响脉冲密度的传播。(a)脉冲密度波在有理表面周围产生，并以m=0/n=0的模式传播。(b)它们到达分流器的时间较晚，以便密度波从合理表面扩散到边缘。(c)对于特定的位置，反应是如此之快，以至于表明在边缘附近的随机性。

The results from 1992 to 1993 are summaried as follows :(1) Magnetic field line tracing by pellet injection.We investigate the temporal response of the ablated particles at the plasma inside, scrape-off layr, and divertor plates.(a) A comparison between the particle traveling and the field line tracing shows a good agreement.(b) Estimated connection length for divertor field lines is - 10m, which is deduced from the delay time measurement.(c) For the particular position, a response is so quick to suggest the stochasiticity near the edge.(d) Global confinement properties affect the propagation of the pulsed density.(2) Density waves by an internal disruption(a) Pulsed density waves are created around the rational surfaces and propagate as an m=0/n=0 mode.(b) They reached to the divertor in a delayd time for density waves to diffuse out from the rational surface to the edge.(c) For particular positions a response is so quick to suggest the stochasiticity near the edge.