摘要
利用几何光学方法对离子回旋波频段内的快波在等离子体中的传播进行了研究.其中考虑了等离子体的热效应,给出了热等离子体色散关系,通过数值求解波迹方程得到了波在等离子体中传播的轨迹,得到在合适的波参数下,快波可以在等离子体中传播,并可以传播到等离子体中心处,而且波在等离子体边缘处被多次反射入等离子体中,形成多次吸收.
The propagation of fast waves in the ion - cyclotron range of frequencies in the plasmas is investigated by using the ray - tracing method. The hot plasma dispersion relation is given with the thermal effect correction, and the ray trajectories are obtained by numerically resolving the ray equations which are integrated with the hot plasma dispersion relation under the initial injected waves parameters. It shows that, with the appropriate parameters, fast wave can easily propagate in the plasmas, reach the center position of the plasmas ,and be reflected near the plasmas edge, the wave energy being absorbed many times.
出处
《南华大学学报（自然科学版）》
2007年第2期4-10,15,共8页
Journal of University of South China：Science and Technology
基金
国家自然科学基金资助项目(10475039)
关键词
快波
几何光学方法
热等离子体色散关系
波迹
fast wave
geometrical optics method
hot plasma dispersion relation
ray trajectories
