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arXiv 2302.11342physics.plasm-ph
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电磁波平行于外部磁场传播时磁化等离子体中的谐波产生

Harmonic generation in magnetized plasma for Electromagnetic wave propagating parallel to external magnetic field

Trishul Dhalia, Rohit Juneja, Laxman Prasad Goswami, Srimanta Maity, Amita Das

AI总结:

本文利用PIC模拟研究磁化等离子体中平行于外磁场传播的电磁波谐波产生,发现线偏振入射波可激发奇次RCP和LCP谐波,且在电子回旋频率处最强,为产生高频圆偏振电磁波提供了理论依据。

摘要:

谐波产生一直是研究任何物理系统非线性性质的基础兴趣所在。本研究通过粒子模拟(Particle-In-Cell,PIC)探索了磁化等离子体中电磁波的谐波产生。电磁波传播方向选择为平行于所施加的外部磁场。模拟表明,当入射波为线偏振时,会激发右旋圆偏振(RCP)和左旋圆偏振(LCP)的奇次高次谐波。当入射电磁波频率与电子回旋频率匹配时,谐波产生最强。当入射电磁波具有圆偏振时,不会激发任何谐波。本文还对这些观测结果提供了理论解释。研究因此表明,通过适当调控等离子体参数,可以产生更高频率且具有所需圆偏振性质的电磁波。

英文摘要:

The harmonic generation has always been of fundamental interest in studying the nonlinear nature of any physical system. In the present study, Particle - In - Cell (PIC) simulations have been carried out to explore the harmonic generation of Electromagnetic waves in a magnetized plasma. The EM wave propagation is chosen to be parallel to the applied external magnetic field. The simulations show the excitation of odd higher harmonics of RCP (Right circularly polarized) and LCP (Left circularly polarized) when the incident wave is linearly polarised. The harmonic generation is maximum when the incident EM wave frequency matches the electron cyclotron frequency. When the incident EM wave has a circular polarization, no harmonics get excited. A theoretical understanding of these observations has also been provided. The studies thus show that by appropriately tailoring of plasma parameters EM waves of higher frequencies and desired nature of circular polarization can be generated.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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