静电波对磁化等离子体的共振加热的理论及数值模拟研究  

Simulation on heating of plasma in a magnetic field with electrostatic wave

作　　者：盛正卯[1] 王庸[1] 马健[1] 郑思波[1] 

机构地区：[1]浙江大学物理系,杭州310027

出　　处：《物理学报》2006年第3期1301-1306,共6页Acta Physica Sinica

基　　金：国家自然科学基金重大项目(批准号:40390150);非线性科学"973"项目(批准号:G2000077305)资助的课题.~~

摘　　要：利用多标度展开得到了更一般的静电波与磁化等离子体回旋运动间的共振条件;通过数值模拟证实了理论分析,发现分数频率同样可以产生共振加热;发现加热效果即使对于相同频率的波,也不是随驱动波的振幅单调增强,而是存在一些优势振幅,即在特定频率特定振幅下有特别好的加热效果.A uniform nonlinear resonant condition for interaction between electrostatic wave and charged particles in a uniform magnetic field is given by multi-scale expansion. It is verified by numerical simulation. It is shown that resonant heating can be produced by electrostatic wave with sub-harmonic frequency of the cyclotron. Moreover, it is shown that the heating efficiency does not increase with the amplitude of driving wave even if for the same frequency, which means there is an optimum combination of frequency and amplitude to get efficient heating.

关 键 词：等离子体 共振加热 非线性动力学 

分 类 号：O532[理学—等离子体物理]