RESQNANCE, PARTICLE TRAPPING" AND' . LANDAU DAM~ING IN FINITE: A,MPLITUDE OBLIQUELY PROPAGATING: WAVES
RESQNANCE, PARTICLE TRAPPING" AND' . LANDAU DAM~ING IN FINITE: A,MPLITUDE OBLIQUELY PROPAGATING: WAVES
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RESQNANCE，粒子捕获”和。有限的朗道筑坝：A，振幅倾斜传播：波
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
P. Palmadesso
中科院分区：
文献类型：
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作者：
P. Palmadesso
利用无世俗性微扰理论，近似求解了与有限振幅波（w，k）共振的质点运动方程。在无限大的无碰撞等离子体中，波以任意角度传播到均匀的背景磁场中。波场包括纵向静电分量和椭圆极化的横向电磁分量。被困和共振未被困粒子的轨迹描述，为每个可能的波粒子共振定义的条件k N q，其中N是一个z整数。这些轨迹被用来构建一个非线性的时间依赖的朗道阻尼率的波的估计。
The equations of motion for a particle in resonance with a small finite amplitude wave (w, k) are solved approximately, using secularity free perturbation theory. The wave propagates at an arbitrary angle to a uniform background magnetic field, ~o' in an infinite collisionless plasma. The wave fields include a longitudinal electrostatic component and elliptically polarized transverse electric and magnetic components. The trajectories of trapped and resonant untrapped particles are described, for each of the possible wave-particle resonances defined by the condition k N q where N is an z integer. These trajectories are used to construct an estimate of the nonlinear time dependent Landau damping rate of the wave.