摘要
用粒子模拟方法求解描述环形等离子体中电子温度梯度静电模的回旋动力学方程 .方程采用圆磁通面的轴对称环形几何系统 ,考虑了有限拉摩半径、电子渡越频率k∥ v∥ 以及环形漂移 (曲率和磁场梯度 )运动wD(v2⊥ ,v2∥ ,θ)的效应 .简述了粒子模拟的基本方法 .采用了四阶变步长积分格式 ,使计算省时、简便 .讨论了模的基本特征 ,并且给出了临界梯度对电子温度与离子温度之比及环形性的依赖关系 .与有关的实验进行了比较 。
The gyrokinetic equations for the electrostatic electron-temperature gradient modes in toroidal plasmas are solved with particle simulation method. An axisymmetric geometry with circular flux surfaces is employed. The full kinetics, including finite Larmor radius effects, transit k(//) v(//), and toroidal (curvature and magnetic gradient) drift motion, is retained. The basic method of the particle simulation is described briefly. The fourth-order adaptive stepsize scheme is adopted, that saves computer time and is simple. The basic characteristics of the modes are discussed. The scaling of the critical gradient with respect to toroidicity and to the ratio of electron temperature over ion temperature is given. Comparison with experiments are made and the theoretical results are close to the experimental observations.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第7期1656-1662,共7页
Acta Physica Sinica
基金
国家自然科学基金(批准号 :10135020)
核科学基金(批准号 :Y710 0C0 3 0 1)资助的课题~~
