【摘要】 采用自主编写的程序HWAP(helicon wave at plasma)模拟了双鞍型天线与均匀柱状螺旋波等离子体相互作用时耦合距离对功率沉积的影响。模拟结果表明:1)在一定实验条件下,双鞍型天线发射的波在等离子体中同时激发螺旋波和Trivelpiece-Gould(TG)波,控制天线耦合距离可改变TG波在等离子体边界附近的能量沉积分布;2)当天线耦合距离在一定范围内变化时(15.0～30.0 cm),耦合距离的大小能影响螺旋波和TG波在能量沉积过程中起的主导作用;3)当天线放置在等离子体中时,波在等离子体中沉积的总功率随耦合距离的增加而减少,当天线放置在等离子体边界和装置外壁之间时,总功率沉积先增加后减少,存在一个最佳耦合距离使功率沉积最大。更多还原

【Abstract】 The influence of coupling distance on power deposition for the interaction between double-saddle antenna and uniform cylindrical helicon plasma is simulated by self-compiled program HWAP. The simulation results show that: 1) Under certain experimental conditions, the wave emitted by the double saddle antenna excites both helicon wave and TG wave, the energy deposition distribution of TG wave near the plasma boundary can be changed by controlling the antenna coupling distance.2) When the antenna coupling distance changes in a certain range(15.0～30.0 cm), the coupling distance can affect the dominant role of helicon wave and TG wave in the energy deposition. 3) When the antenna is placed in the plasma, the total power deposition decreases with the increase of coupling distance. When the antenna is placed between the plasma edge and the outer wall of the device, the total power deposition first increases and then decreases. There is an optimal coupling distance to maximize the power deposition.更多还原