Numerical simulation on diagnosis of stimulated Raman scattered electrostatic wave using relativistic electron probe

Lan Ziyue; Pan Kaiqiang; Yang Dong; Li Zhichao; Gong Tao; Li Sanwei; Jiang Xiaohua; Li Qi; Guo Liang; Yang Jiamin; Jiang Shaoen

doi:10.11884/HPLPB202133.210104

Volume 33 Issue 11

Nov. 2021

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Lan Ziyue, Pan Kaiqiang, Yang Dong, et al. Numerical simulation on diagnosis of stimulated Raman scattered electrostatic wave using relativistic electron probe[J]. High Power Laser and Particle Beams, 2021, 33: 112001. doi: 10.11884/HPLPB202133.210104

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Lan Ziyue, Pan Kaiqiang, Yang Dong, et al. Numerical simulation on diagnosis of stimulated Raman scattered electrostatic wave using relativistic electron probe[J]. High Power Laser and Particle Beams, 2021, 33: 112001. doi: 10.11884/HPLPB202133.210104

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Numerical simulation on diagnosis of stimulated Raman scattered electrostatic wave using relativistic electron probe

doi: 10.11884/HPLPB202133.210104

Laser Fusion Research Center, CAEP, Mianyang 621900, China

Received Date: 2021-03-23
Rev Recd Date: 2021-11-05

Available Online: 2021-11-11

Publish Date: 2021-11-15

Abstract

Abstract

This paper uses the two-dimensional particle-in-cell simulation program EPOCH to verify the feasibility of the relativistic electron beam probe in diagnosing the electrostatic wave generated by stimulated Raman scattering. The results show that the electron beam probe will produce density modulation in the transverse direction of the electron beam probe after passing through the electrostatic wave’s electric field. The density modulation is periodically distributed and moves along the propagation direction of the electrostatic wave. The wavenumber of the density modulation corresponds to the wavenumber of the electrostatic wave. And the moving speed corresponds to the phase speed of the electrostatic wave, so it can be used to deduce the temperature and density of electrons under certain conditions. In the process of diagnosing electrostatic waves, the beam length of the electron beam probe must be shorter than the wavelength of the electrostatic wave or the exposure time of the diagnostic equipment must be less than the period of the electrostatic wave. The research in this paper provides a new method of directly diagnosing the temperature and density of electrostatic waves and electrons, which is of great significance for promoting the experimental research of stimulated Raman scattering and other laser plasma instabilities.
- inertial confinement fusion,
- stimulated Raman scattering,
- particle simulation,
- ultrafast electron probe,
- laser plasma diagnosis

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References(20)

References

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