Calculation and simulation on plane-wave absorption characteristics of magnetized plasma
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摘要: 研究了平面电磁波在磁化、稳定、二维、非均匀等离子体中的传播特性;采用等效输入阻抗方法计算非均匀磁化等离子体层对不同模式入射电磁波的功率吸收情况。结果表明,电子数密度、碰撞频率和外磁场大小是等离子体对电磁波功率吸收的主要影响因素。采用等效介电常数的方法模拟等离子体特性,代入有限元软件进行平面电磁波入射等离子体仿真,得到了非寻常波与右旋极化波的吸收特性。根据数值计算和全波仿真结果可知,当等离子体密度为1017 m-3、碰撞频率2.5 GHz、外加磁场的磁感应强度为0.15 T时,磁化等离子体对电磁波有强烈的吸收特性。Abstract: The absorption characteristics of the plane electromagnetic wave in magnetized plasma is studied by using the equivalent input impedance method. The result shows that the absorption characteristics can be primarily affected by the electron numerical density, the collision frequency, and the magnetic intensity. Different modes of electromagnetic wave are discussed and the variation of absorption property with changing parameter is given. A finite element simulation result is obtained by taking equivalent permittivity of plasma stabs in. This work explains operation parameter chosen principle and is useful for engineering application.
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Key words:
- plane electromagnetic wave /
- plasma /
- absorption characteristics
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