相对论磁化运动等离子体的介电张量
Dielectric rate tensor of magnetic motional plasma
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摘要: 定义了相对论磁化运动等离子体(MMP)的物理模型。利用微扰理论导出了系统的介电张量，研究发现，MMP具有完全不同于静态磁化等离子体介电张量的形式。对电磁波沿轴向传播的情况进行了数值模拟计算，结果表明，系统的共振频率随等离子体密度的增加而非线性增加，在相同的条件下，右旋波的共振频率高于左旋波的共振频率。对于传播的右旋电磁波，增加纵向磁场，共振频率提高，而对于左旋电磁波，增加纵向磁场，共振频率降低。Abstract: The physical model of magnetic motional plasma (MMP) is defined. Adopting method of perturbation theory to derive dielectric rate tensor of system, MMP shows a completely different form of the dielectric tensor with the static magnetic plasma. The results, given by numerical computation for propagating longitudinal wave, reveal that resonant frequency of system nonlinearly enhance with the increasing of plasma density; At the same conditions resonant frequency of dextral wave is higher than that of sinistral wave, The resonant frequency of system enhances with longitudinal magnetic field descends for the propagating dextral electromagnetic wave, but for the sinistral one．
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Key words:
- charge fluid /
- dielectric rate tensor /
- plasma /
- fluid theory
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