论文标题
通过压力引起的电离 - 分解耗散的慢磁波吸收
Slow magnetosonic wave absorption by pressure induced ionization-recombination dissipation
论文作者
论文摘要
提出了一种通过压力引起的电离度振荡对缓慢磁波（SMW）阻尼的新机制。定量得出阻尼率的明确公式。简要讨论了新机制将占主导地位的物理条件。电离重组阻尼是独立的频率，并且没有流体动力学解释。大致说明大面积的部分电离等离子体是SMW低音的阻尼器，而通常的MHD机构则作为低通滤波器的作用。派生的阻尼速率与恒定磁场和波形之间正弦正方形成正比。定性地考虑了由湍流区域创建的SMW和Alfvén波（AW）光谱密度（AW）的角度分布。计算出的阻尼率由氢原子的电子冲击横截面表示，简而言之，对所提出的阻尼机制的所有细节进行了充分的研究。
A new mechanisms for damping of slow magnetosonic waves (SMW) by pressure induced oscillations of the ionization degree is proposed. An explicit formula for the damping rate is quantitatively derived. Physical conditions where the new mechanism will dominate are briefly discussed. The ionization-recombination damping is frequency independent and has no hydrodynamic interpretation. Roughly speaking large area of partially ionized plasma are damper for basses of SMW while usual MHD mechanisms operate as a low pass filter. The derived damping rate is proportional to the square of the sine between the constant magnetic field and the wave-vector. Angular distribution of the spectral density of SMW and Alfvén waves (AW) created by turbulent regions and passing through large regions of partially ionized plasma is qualitatively considered. The calculated damping rate is expressed by the electron impact cross section of the hydrogen atom and in short all details of the proposed damping mechanisms are well studied.
