螺旋波等离子体中螺旋波与Trivelpiece-Gould波模式耦合及线性能量沉积特性参量分析

采用有限温度等离子体介电张量模型,在考虑粒子热效应情形下,通过求解传导边界条件下等离子体柱中本征模的色散关系,分析了螺旋波等离子体中典型参量条件下螺旋波与Trivelpiece-Gould(TG)波的耦合特性及线性能量沉积特性.在w/(2π)=13.56 MHz和TeV,i=0.1TeV,e参量条件下计算结果表明:对于螺旋波,存在截止静磁场B0,H,cutoff与截止等离子体密度n0,H,cutoff,在B0>B0,H,cutoff或n0

Parametric analysis of mode coupling and liner energy deposition properties of helicon and Trivelpiece-Gould waves in helicon plasma

Based on the finite temperature plasma dielectric tensor model which contains the particle thermal effect,by numerically solving the eigenmode dispersion relation of electromagnetic waves propagating in radially uniform and magnetized warm plasma column which is surrounded by conducting boundary,the mode coupling characteristic and liner damping mechanism induced wave power deposition properties of helicon and Trivelpiece-Gould(TG)waves are parametrically analyzed.The detailed investigations show as follows.Under typical helicon plasma parameter conditions,i.e.wave frequency w/(2π)=13.56 MHz,ion temperature is much smaller than electron temperature,for the helicon wave,there exist a cut-off magnetic field B0,H,cutoff and a cutoff plasma density n0,H,cutoff,for which under the conditions of B0>B0,H,cutoff or n0