Nonlinear frequency shift of electron acoustic waves in relativistic hot plasma

Qian Pingtong; Zhang Xiaobo; Huang Mao; Xue Jukui

doi:10.11884/HPLPB202436.230136

Volume 36 Issue 1

Jan. 2024

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Qian Pingtong, Zhang Xiaobo, Huang Mao, et al. Nonlinear frequency shift of electron acoustic waves in relativistic hot plasma[J]. High Power Laser and Particle Beams, 2024, 36: 012002. doi: 10.11884/HPLPB202436.230136

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Qian Pingtong, Zhang Xiaobo, Huang Mao, et al. Nonlinear frequency shift of electron acoustic waves in relativistic hot plasma[J]. High Power Laser and Particle Beams, 2024, 36: 012002. doi: 10.11884/HPLPB202436.230136

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Nonlinear frequency shift of electron acoustic waves in relativistic hot plasma

doi: 10.11884/HPLPB202436.230136

Qian Pingtong^{1, 2
,},
Zhang Xiaobo¹,
Huang Mao¹,
Xue Jukui^{1
,
,}

1.
College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China
2.
Hope College, Southwest Jiaotong University, Chengdu 610400, China

Received Date: 2023-04-16
Accepted Date: 2023-12-19
Rev Recd Date: 2023-12-23

Available Online: 2024-01-15

Publish Date: 2024-01-15

Abstract

Abstract

Based on the electromagnetic fluid model, the effects of electron temperature and plasma density on the nonlinear frequency shift of electron acoustic wave in a relativistic hot plasma are investigated. The nonlinear frequency shift equation of electron acoustic wave is obtained by using the nonlinear frequency shift theory and perturbation method. The results show that the plasma density, the ﬁrst harmonic amplitude and the electron temperature are the main factors that determine the nonlinear frequency shift of electron acoustic wave in relativistic hot plasma. For weak excitation, the nonlinear frequency shift increases with the increase of electron temperature and the ﬁrst harmonic amplitude, and the plasma density inhibits the nonlinear frequency shift. The impact of electron temperature and the plasma density on nonlinear frequency shift shows a strong nonlinear character. The results provide a theoretical evidence for understanding the high power laser-plasma interaction and the generation of harmonics.
- electromagnetic pulse,
- hot plasma,
- electron acoustic wave,
- nonlinear frequency shift

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References(41)

References

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