Partial ionised solar plasma has received recently more attention as several processes in the solar atmosphere could not be explained by assuming a fully ionised state. In this study, we investigate the numerically temporal evolution of waves driven by a spectrum of waves in a thin magnetic stratified flux tube. The plasma dynamics is studied considering a two-fluid (charged particles and neutrals) framework, for a frequency regime that is comparable with the collisional frequencies between ions and neutral particles. The evolutionary equations for the two species have been derived analytically, and analytical solutions are obtained considering an initial value problem. Our results show that the charged population oscillates in such a way that an observer would sense a wave propagating with the frequency of the driver, and this signal is followed by a decaying wake that oscillates with the cutoff frequency. Thanks to collisions between ions and neutrals, the wave associated with the neutral species is very rapidly decaying.

部分电离的太阳等离子体最近受到更多关注，因为太阳大气中的一些过程无法通过假设完全电离状态来解释。在这项研究中，我们研究了薄磁分层通量管中波谱驱动的波的数值时间演化。考虑双流体（带电粒子和中性粒子）框架来研究等离子体动力学，其频率范围与离子和中性粒子之间的碰撞频率相当。解析推导了两个物种的进化方程，并考虑了初值问题获得了解析解。我们的结果表明，带电群体的振荡方式使得观察者会感觉到以驱动器频率传播的波，并且该信号后面跟着以截止频率振荡的衰减尾流。由于离子和中性物质之间的碰撞，与中性物质相关的波非常迅速地衰减。