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本文用均匀等离子体传递函数的方法,研究了计及纵向变化磁场情况下,高斯形状的线性调频脉冲通过等离子体时,产生波的劈裂和畸变。计算了无碰撞损失和有碰撞损失情况下,调频脉冲的包络。同时,讨论了在给定电子密度情况下,外加磁场值的选择和最佳波形的脉宽选择。
In this paper, we use uniform plasma transfer function method to study the splitting and distortion of the waves generated by the Gaussian-shaped chirp passing through the plasma, taking into account the longitudinal magnetic field changes. The envelope of FM pulse is calculated under the condition of no collision loss and collision loss. In the meantime, the choice of the applied magnetic field value and the pulse width of the best waveform for a given electron density are discussed.