托卡马克等离子体中电子温度梯度不稳定性的粒子模拟研究

Particle Simulation Study for the Electron Temperature Gradient Instability in Tokamak Toroidal Plasmas

用粒子模拟方法求解在环形等离子体中静电电子温度梯度模的回旋动力学方程。采用了四阶变步长积分格式,使计算省时、简便;并且给出了模的最大增长率与电子温度梯度参数η_e和R/L_(Te)的变化关系。与有关的实验进行了比较,数值结果接近实验测量值。

The gyrokinetic equations for the electrostatic electron temperature gradient modes in toroidal plamas are solvedwith particle simulation method. The fourth-order adaptive stepsize scheme is adopted, that saves computer time and is simple.The maximum growth rate of the mode versus the electron temperature gradient parameters η_e and R/L_(Te) is given. Comparisonwith experiments are made and the theoretical results are close to the experimental observations.