Laser propagation and soliton generation in strongly magnetized plasmas
Laser propagation and soliton generation in strongly magnetized plasmas
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DOI：
10.1063/1.4942789
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发表时间：
2016-03
影响因子：
2.2
通讯作者：
W. Feng;Jiquan Li;Y. Kishimoto
中科院分区：
文献类型：
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作者：
W. Feng;Jiquan Li;Y. Kishimoto
通过一维粒子模拟和解析求解激光波动方程，研究了不同偏振态的激光模式在强磁化等离子体中的传输特性以及孤子的产生.粒子模拟结果表明，激光加热效率与磁场强度、激光脉冲的传播模式及其强度密切相关。大振幅激光可以有效地加热强磁场等离子体。理论分析表明，激光脉冲在欠密和过密磁化等离子体中的线性传播得到了数值模拟的证实。最有趣的是，在一定的磁场强度和激光强度范围内，可以产生一个频率低于激光频率的静止或运动孤子，从而大大提高激光加热效率。正确的磁场强度范围-...
The propagation characteristics of various laser modes with different polarization, as well as the soliton generation in strongly magnetized plasmas are studied numerically through one-dimensional (1D) particle-in-cell (PIC) simulations and analytically by solving the laser wave equation. PIC simulations show that the laser heating efficiency substantially depends on the magnetic field strength, the propagation modes of the laser pulse and their intensities. Generally, large amplitude laser can efficiently heat the plasma with strong magnetic field. Theoretical analyses on the linear propagation of the laser pulse in both under-dense and over-dense magnetized plasmas are well confirmed by the numerical observations. Most interestingly, it is found that a standing or moving soliton with frequency lower than the laser frequency is generated in certain magnetic field strength and laser intensity range, which can greatly enhance the laser heating efficiency. The range of magnetic field strength for the right-...